P0303 and Coolant
11-25-2006, 04:51 PM
#41
Guest
Posts: n/a
Re: P0303 and Coolant
This is from the Factory Service Manual, it is printed in bold typefont:
"CAUTION: Do not use coolant additives that are
claimed to improve engine cooling."
Under Chemical Cleaning:
CHEMICAL CLEANING
If visual inspection indicates the formation of
sludge or scaly deposits, use a radiator cleaner
(Mopar Radiator Kleen or equivalent) before flushing.
This will soften scale and other deposits and aid the
flushing operation.
CAUTION: Be sure instructions on the container are
followed.
I used Zerex 'Flush' (the milder or the two) because the girl that had the
WJ before me allowed her corner Quickie-Lube to 'top off' her expansion tank
with Prestone Universal which turned the factory G-05 into reddish-brown
slime.
I also removed the expansion tank and inoperative coolant sensor and cleaned
them in the basement laundry tub. The sensor worked fine after a thorough
cleaning and reinstallation.
You can check on the Jeep web site for recall notices, there was a recall
several years ago to install some reflective insulation on the 4 liter
engine manifolds.
You may be able to clean spark plug number 3 but then replacement is only a
couple dollars. The Jeep engines seem to not like the new high tech
sparkplugs so it would probably be best to avoid the +2, +4, & iridium
plugs.
"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
> Thanks for the responses, guys. I cleared the code last night and drove
> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
> with three coil packs. The P0303 and the coolant are completely unrelated
> issues, I just posted in one post to keep the clutter down.
>
> My research has shown that the P0303 problem is known to be a heat soak
> issue with injector #3. Apparently, sometimes the heat from the exhaust
> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire. The fix is an insulating wrap around injector #3.
>
> The coolant in the radiator right now is brown. I assume someone drained
> the radiator and re-filled it with standard coolant. That's why I want to
> flush the system. I read that there is a 7-hour flush. Apparently I just
> add it to the radiator (after draining a small amount, of course), and it
> cleans the system during a seven-hour drive. I'll be driving back over to
> Seattle next weekend (a five hour drive) and I plan to change the coolant
> while I'm there. Am I barking up the right tree here?
>
> I have seen positive results with using water wetter in an all ready good
> cooling system. I would not expect to see results using a it in a clogged,
> contaminated, or otherwise maulfuntioning system. Per reccomendation here,
> I will not add it to the XJ. Just curious why they say not to use it?
>
>
>
>
>
> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> Yes. What would you deduce from a P0303 code?
>>
>> HINT
>> The code means the #3 plug is not firing properly, which by definition is
>> a spark issue.
>>
>>
>>
>>
>>
>> "bllsht" <nospam@dot.net> wrote in message
>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>> So just from the P-code you've already determined it's a spark issue.
>>> Wow. You're good.
>>>
>>>
>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>> <crwlr@yahoo.com> wrote:
>>>
>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>
>>>>
>>>>
>>>>
>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>news:45686645$0$21225$88260bb3@free.teranews.c om...
>>>>> Heh, I read this as two separate issues. ;^)
>>>>>
>>>>> You are right that he needs to address the spark issue too.
>>>>>
>>>>> Earle
>>>>>
>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>> thing
>>>>>> by the way -- but this will not fix the error code.
>>>>>>
>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>> wires
>>>>> or
>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>> certainly
>>>>>> would not spend time and money on completely unrelated systems,
>>>>>> especially
>>>>>> when those systems have their own series of codes to tell me when
>>>>>> they
>>>>>> are
>>>>>> not feeling well.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>> >
>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>> > for
>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>> > than
>>>>> one
>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>> > everything
>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire way.
>>>>>> > Fuel
>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>> >
>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>> > misfire.
>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>> > and
>>>>>> > cleaned. Any ideas where to start looking?
>>>>>> >
>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I can
>>>>>> > get
>>>>>> > the prestone heater hose tee, and flush it with a garden hose. Then
>>>>> drain
>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>> water.
>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>> > right
>>>>>> > mixture?
>>>>>> >
>>>>>> > Thanks,
>>>>>> >
>>>>>> > Carl
>>>>>> >
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>
>>
>
>
"CAUTION: Do not use coolant additives that are
claimed to improve engine cooling."
Under Chemical Cleaning:
CHEMICAL CLEANING
If visual inspection indicates the formation of
sludge or scaly deposits, use a radiator cleaner
(Mopar Radiator Kleen or equivalent) before flushing.
This will soften scale and other deposits and aid the
flushing operation.
CAUTION: Be sure instructions on the container are
followed.
I used Zerex 'Flush' (the milder or the two) because the girl that had the
WJ before me allowed her corner Quickie-Lube to 'top off' her expansion tank
with Prestone Universal which turned the factory G-05 into reddish-brown
slime.
I also removed the expansion tank and inoperative coolant sensor and cleaned
them in the basement laundry tub. The sensor worked fine after a thorough
cleaning and reinstallation.
You can check on the Jeep web site for recall notices, there was a recall
several years ago to install some reflective insulation on the 4 liter
engine manifolds.
You may be able to clean spark plug number 3 but then replacement is only a
couple dollars. The Jeep engines seem to not like the new high tech
sparkplugs so it would probably be best to avoid the +2, +4, & iridium
plugs.
"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
> Thanks for the responses, guys. I cleared the code last night and drove
> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
> with three coil packs. The P0303 and the coolant are completely unrelated
> issues, I just posted in one post to keep the clutter down.
>
> My research has shown that the P0303 problem is known to be a heat soak
> issue with injector #3. Apparently, sometimes the heat from the exhaust
> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire. The fix is an insulating wrap around injector #3.
>
> The coolant in the radiator right now is brown. I assume someone drained
> the radiator and re-filled it with standard coolant. That's why I want to
> flush the system. I read that there is a 7-hour flush. Apparently I just
> add it to the radiator (after draining a small amount, of course), and it
> cleans the system during a seven-hour drive. I'll be driving back over to
> Seattle next weekend (a five hour drive) and I plan to change the coolant
> while I'm there. Am I barking up the right tree here?
>
> I have seen positive results with using water wetter in an all ready good
> cooling system. I would not expect to see results using a it in a clogged,
> contaminated, or otherwise maulfuntioning system. Per reccomendation here,
> I will not add it to the XJ. Just curious why they say not to use it?
>
>
>
>
>
> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> Yes. What would you deduce from a P0303 code?
>>
>> HINT
>> The code means the #3 plug is not firing properly, which by definition is
>> a spark issue.
>>
>>
>>
>>
>>
>> "bllsht" <nospam@dot.net> wrote in message
>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>> So just from the P-code you've already determined it's a spark issue.
>>> Wow. You're good.
>>>
>>>
>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>> <crwlr@yahoo.com> wrote:
>>>
>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>
>>>>
>>>>
>>>>
>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>news:45686645$0$21225$88260bb3@free.teranews.c om...
>>>>> Heh, I read this as two separate issues. ;^)
>>>>>
>>>>> You are right that he needs to address the spark issue too.
>>>>>
>>>>> Earle
>>>>>
>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>> thing
>>>>>> by the way -- but this will not fix the error code.
>>>>>>
>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>> wires
>>>>> or
>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>> certainly
>>>>>> would not spend time and money on completely unrelated systems,
>>>>>> especially
>>>>>> when those systems have their own series of codes to tell me when
>>>>>> they
>>>>>> are
>>>>>> not feeling well.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>> >
>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>> > for
>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>> > than
>>>>> one
>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>> > everything
>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire way.
>>>>>> > Fuel
>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>> >
>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>> > misfire.
>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>> > and
>>>>>> > cleaned. Any ideas where to start looking?
>>>>>> >
>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I can
>>>>>> > get
>>>>>> > the prestone heater hose tee, and flush it with a garden hose. Then
>>>>> drain
>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>> water.
>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>> > right
>>>>>> > mixture?
>>>>>> >
>>>>>> > Thanks,
>>>>>> >
>>>>>> > Carl
>>>>>> >
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>
>>
>
>
11-25-2006, 04:51 PM
#42
Guest
Posts: n/a
Re: P0303 and Coolant
This is from the Factory Service Manual, it is printed in bold typefont:
"CAUTION: Do not use coolant additives that are
claimed to improve engine cooling."
Under Chemical Cleaning:
CHEMICAL CLEANING
If visual inspection indicates the formation of
sludge or scaly deposits, use a radiator cleaner
(Mopar Radiator Kleen or equivalent) before flushing.
This will soften scale and other deposits and aid the
flushing operation.
CAUTION: Be sure instructions on the container are
followed.
I used Zerex 'Flush' (the milder or the two) because the girl that had the
WJ before me allowed her corner Quickie-Lube to 'top off' her expansion tank
with Prestone Universal which turned the factory G-05 into reddish-brown
slime.
I also removed the expansion tank and inoperative coolant sensor and cleaned
them in the basement laundry tub. The sensor worked fine after a thorough
cleaning and reinstallation.
You can check on the Jeep web site for recall notices, there was a recall
several years ago to install some reflective insulation on the 4 liter
engine manifolds.
You may be able to clean spark plug number 3 but then replacement is only a
couple dollars. The Jeep engines seem to not like the new high tech
sparkplugs so it would probably be best to avoid the +2, +4, & iridium
plugs.
"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
> Thanks for the responses, guys. I cleared the code last night and drove
> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
> with three coil packs. The P0303 and the coolant are completely unrelated
> issues, I just posted in one post to keep the clutter down.
>
> My research has shown that the P0303 problem is known to be a heat soak
> issue with injector #3. Apparently, sometimes the heat from the exhaust
> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire. The fix is an insulating wrap around injector #3.
>
> The coolant in the radiator right now is brown. I assume someone drained
> the radiator and re-filled it with standard coolant. That's why I want to
> flush the system. I read that there is a 7-hour flush. Apparently I just
> add it to the radiator (after draining a small amount, of course), and it
> cleans the system during a seven-hour drive. I'll be driving back over to
> Seattle next weekend (a five hour drive) and I plan to change the coolant
> while I'm there. Am I barking up the right tree here?
>
> I have seen positive results with using water wetter in an all ready good
> cooling system. I would not expect to see results using a it in a clogged,
> contaminated, or otherwise maulfuntioning system. Per reccomendation here,
> I will not add it to the XJ. Just curious why they say not to use it?
>
>
>
>
>
> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> Yes. What would you deduce from a P0303 code?
>>
>> HINT
>> The code means the #3 plug is not firing properly, which by definition is
>> a spark issue.
>>
>>
>>
>>
>>
>> "bllsht" <nospam@dot.net> wrote in message
>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>> So just from the P-code you've already determined it's a spark issue.
>>> Wow. You're good.
>>>
>>>
>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>> <crwlr@yahoo.com> wrote:
>>>
>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>
>>>>
>>>>
>>>>
>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>news:45686645$0$21225$88260bb3@free.teranews.c om...
>>>>> Heh, I read this as two separate issues. ;^)
>>>>>
>>>>> You are right that he needs to address the spark issue too.
>>>>>
>>>>> Earle
>>>>>
>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>> thing
>>>>>> by the way -- but this will not fix the error code.
>>>>>>
>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>> wires
>>>>> or
>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>> certainly
>>>>>> would not spend time and money on completely unrelated systems,
>>>>>> especially
>>>>>> when those systems have their own series of codes to tell me when
>>>>>> they
>>>>>> are
>>>>>> not feeling well.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>> >
>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>> > for
>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>> > than
>>>>> one
>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>> > everything
>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire way.
>>>>>> > Fuel
>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>> >
>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>> > misfire.
>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>> > and
>>>>>> > cleaned. Any ideas where to start looking?
>>>>>> >
>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I can
>>>>>> > get
>>>>>> > the prestone heater hose tee, and flush it with a garden hose. Then
>>>>> drain
>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>> water.
>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>> > right
>>>>>> > mixture?
>>>>>> >
>>>>>> > Thanks,
>>>>>> >
>>>>>> > Carl
>>>>>> >
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>
>>
>
>
"CAUTION: Do not use coolant additives that are
claimed to improve engine cooling."
Under Chemical Cleaning:
CHEMICAL CLEANING
If visual inspection indicates the formation of
sludge or scaly deposits, use a radiator cleaner
(Mopar Radiator Kleen or equivalent) before flushing.
This will soften scale and other deposits and aid the
flushing operation.
CAUTION: Be sure instructions on the container are
followed.
I used Zerex 'Flush' (the milder or the two) because the girl that had the
WJ before me allowed her corner Quickie-Lube to 'top off' her expansion tank
with Prestone Universal which turned the factory G-05 into reddish-brown
slime.
I also removed the expansion tank and inoperative coolant sensor and cleaned
them in the basement laundry tub. The sensor worked fine after a thorough
cleaning and reinstallation.
You can check on the Jeep web site for recall notices, there was a recall
several years ago to install some reflective insulation on the 4 liter
engine manifolds.
You may be able to clean spark plug number 3 but then replacement is only a
couple dollars. The Jeep engines seem to not like the new high tech
sparkplugs so it would probably be best to avoid the +2, +4, & iridium
plugs.
"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
> Thanks for the responses, guys. I cleared the code last night and drove
> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
> with three coil packs. The P0303 and the coolant are completely unrelated
> issues, I just posted in one post to keep the clutter down.
>
> My research has shown that the P0303 problem is known to be a heat soak
> issue with injector #3. Apparently, sometimes the heat from the exhaust
> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire. The fix is an insulating wrap around injector #3.
>
> The coolant in the radiator right now is brown. I assume someone drained
> the radiator and re-filled it with standard coolant. That's why I want to
> flush the system. I read that there is a 7-hour flush. Apparently I just
> add it to the radiator (after draining a small amount, of course), and it
> cleans the system during a seven-hour drive. I'll be driving back over to
> Seattle next weekend (a five hour drive) and I plan to change the coolant
> while I'm there. Am I barking up the right tree here?
>
> I have seen positive results with using water wetter in an all ready good
> cooling system. I would not expect to see results using a it in a clogged,
> contaminated, or otherwise maulfuntioning system. Per reccomendation here,
> I will not add it to the XJ. Just curious why they say not to use it?
>
>
>
>
>
> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> Yes. What would you deduce from a P0303 code?
>>
>> HINT
>> The code means the #3 plug is not firing properly, which by definition is
>> a spark issue.
>>
>>
>>
>>
>>
>> "bllsht" <nospam@dot.net> wrote in message
>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>> So just from the P-code you've already determined it's a spark issue.
>>> Wow. You're good.
>>>
>>>
>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>> <crwlr@yahoo.com> wrote:
>>>
>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>
>>>>
>>>>
>>>>
>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>news:45686645$0$21225$88260bb3@free.teranews.c om...
>>>>> Heh, I read this as two separate issues. ;^)
>>>>>
>>>>> You are right that he needs to address the spark issue too.
>>>>>
>>>>> Earle
>>>>>
>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>> thing
>>>>>> by the way -- but this will not fix the error code.
>>>>>>
>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>> wires
>>>>> or
>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>> certainly
>>>>>> would not spend time and money on completely unrelated systems,
>>>>>> especially
>>>>>> when those systems have their own series of codes to tell me when
>>>>>> they
>>>>>> are
>>>>>> not feeling well.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>> >
>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>> > for
>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>> > than
>>>>> one
>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>> > everything
>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire way.
>>>>>> > Fuel
>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>> >
>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>> > misfire.
>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>> > and
>>>>>> > cleaned. Any ideas where to start looking?
>>>>>> >
>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I can
>>>>>> > get
>>>>>> > the prestone heater hose tee, and flush it with a garden hose. Then
>>>>> drain
>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>> water.
>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>> > right
>>>>>> > mixture?
>>>>>> >
>>>>>> > Thanks,
>>>>>> >
>>>>>> > Carl
>>>>>> >
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>
>>
>
>
11-25-2006, 04:51 PM
#43
Guest
Posts: n/a
Re: P0303 and Coolant
This is from the Factory Service Manual, it is printed in bold typefont:
"CAUTION: Do not use coolant additives that are
claimed to improve engine cooling."
Under Chemical Cleaning:
CHEMICAL CLEANING
If visual inspection indicates the formation of
sludge or scaly deposits, use a radiator cleaner
(Mopar Radiator Kleen or equivalent) before flushing.
This will soften scale and other deposits and aid the
flushing operation.
CAUTION: Be sure instructions on the container are
followed.
I used Zerex 'Flush' (the milder or the two) because the girl that had the
WJ before me allowed her corner Quickie-Lube to 'top off' her expansion tank
with Prestone Universal which turned the factory G-05 into reddish-brown
slime.
I also removed the expansion tank and inoperative coolant sensor and cleaned
them in the basement laundry tub. The sensor worked fine after a thorough
cleaning and reinstallation.
You can check on the Jeep web site for recall notices, there was a recall
several years ago to install some reflective insulation on the 4 liter
engine manifolds.
You may be able to clean spark plug number 3 but then replacement is only a
couple dollars. The Jeep engines seem to not like the new high tech
sparkplugs so it would probably be best to avoid the +2, +4, & iridium
plugs.
"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
> Thanks for the responses, guys. I cleared the code last night and drove
> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
> with three coil packs. The P0303 and the coolant are completely unrelated
> issues, I just posted in one post to keep the clutter down.
>
> My research has shown that the P0303 problem is known to be a heat soak
> issue with injector #3. Apparently, sometimes the heat from the exhaust
> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire. The fix is an insulating wrap around injector #3.
>
> The coolant in the radiator right now is brown. I assume someone drained
> the radiator and re-filled it with standard coolant. That's why I want to
> flush the system. I read that there is a 7-hour flush. Apparently I just
> add it to the radiator (after draining a small amount, of course), and it
> cleans the system during a seven-hour drive. I'll be driving back over to
> Seattle next weekend (a five hour drive) and I plan to change the coolant
> while I'm there. Am I barking up the right tree here?
>
> I have seen positive results with using water wetter in an all ready good
> cooling system. I would not expect to see results using a it in a clogged,
> contaminated, or otherwise maulfuntioning system. Per reccomendation here,
> I will not add it to the XJ. Just curious why they say not to use it?
>
>
>
>
>
> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> Yes. What would you deduce from a P0303 code?
>>
>> HINT
>> The code means the #3 plug is not firing properly, which by definition is
>> a spark issue.
>>
>>
>>
>>
>>
>> "bllsht" <nospam@dot.net> wrote in message
>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>> So just from the P-code you've already determined it's a spark issue.
>>> Wow. You're good.
>>>
>>>
>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>> <crwlr@yahoo.com> wrote:
>>>
>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>
>>>>
>>>>
>>>>
>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>news:45686645$0$21225$88260bb3@free.teranews.c om...
>>>>> Heh, I read this as two separate issues. ;^)
>>>>>
>>>>> You are right that he needs to address the spark issue too.
>>>>>
>>>>> Earle
>>>>>
>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>> thing
>>>>>> by the way -- but this will not fix the error code.
>>>>>>
>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>> wires
>>>>> or
>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>> certainly
>>>>>> would not spend time and money on completely unrelated systems,
>>>>>> especially
>>>>>> when those systems have their own series of codes to tell me when
>>>>>> they
>>>>>> are
>>>>>> not feeling well.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>> >
>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>> > for
>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>> > than
>>>>> one
>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>> > everything
>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire way.
>>>>>> > Fuel
>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>> >
>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>> > misfire.
>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>> > and
>>>>>> > cleaned. Any ideas where to start looking?
>>>>>> >
>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I can
>>>>>> > get
>>>>>> > the prestone heater hose tee, and flush it with a garden hose. Then
>>>>> drain
>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>> water.
>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>> > right
>>>>>> > mixture?
>>>>>> >
>>>>>> > Thanks,
>>>>>> >
>>>>>> > Carl
>>>>>> >
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>
>>
>
>
"CAUTION: Do not use coolant additives that are
claimed to improve engine cooling."
Under Chemical Cleaning:
CHEMICAL CLEANING
If visual inspection indicates the formation of
sludge or scaly deposits, use a radiator cleaner
(Mopar Radiator Kleen or equivalent) before flushing.
This will soften scale and other deposits and aid the
flushing operation.
CAUTION: Be sure instructions on the container are
followed.
I used Zerex 'Flush' (the milder or the two) because the girl that had the
WJ before me allowed her corner Quickie-Lube to 'top off' her expansion tank
with Prestone Universal which turned the factory G-05 into reddish-brown
slime.
I also removed the expansion tank and inoperative coolant sensor and cleaned
them in the basement laundry tub. The sensor worked fine after a thorough
cleaning and reinstallation.
You can check on the Jeep web site for recall notices, there was a recall
several years ago to install some reflective insulation on the 4 liter
engine manifolds.
You may be able to clean spark plug number 3 but then replacement is only a
couple dollars. The Jeep engines seem to not like the new high tech
sparkplugs so it would probably be best to avoid the +2, +4, & iridium
plugs.
"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
> Thanks for the responses, guys. I cleared the code last night and drove
> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
> with three coil packs. The P0303 and the coolant are completely unrelated
> issues, I just posted in one post to keep the clutter down.
>
> My research has shown that the P0303 problem is known to be a heat soak
> issue with injector #3. Apparently, sometimes the heat from the exhaust
> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire. The fix is an insulating wrap around injector #3.
>
> The coolant in the radiator right now is brown. I assume someone drained
> the radiator and re-filled it with standard coolant. That's why I want to
> flush the system. I read that there is a 7-hour flush. Apparently I just
> add it to the radiator (after draining a small amount, of course), and it
> cleans the system during a seven-hour drive. I'll be driving back over to
> Seattle next weekend (a five hour drive) and I plan to change the coolant
> while I'm there. Am I barking up the right tree here?
>
> I have seen positive results with using water wetter in an all ready good
> cooling system. I would not expect to see results using a it in a clogged,
> contaminated, or otherwise maulfuntioning system. Per reccomendation here,
> I will not add it to the XJ. Just curious why they say not to use it?
>
>
>
>
>
> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> Yes. What would you deduce from a P0303 code?
>>
>> HINT
>> The code means the #3 plug is not firing properly, which by definition is
>> a spark issue.
>>
>>
>>
>>
>>
>> "bllsht" <nospam@dot.net> wrote in message
>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>> So just from the P-code you've already determined it's a spark issue.
>>> Wow. You're good.
>>>
>>>
>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>> <crwlr@yahoo.com> wrote:
>>>
>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>
>>>>
>>>>
>>>>
>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>news:45686645$0$21225$88260bb3@free.teranews.c om...
>>>>> Heh, I read this as two separate issues. ;^)
>>>>>
>>>>> You are right that he needs to address the spark issue too.
>>>>>
>>>>> Earle
>>>>>
>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>> thing
>>>>>> by the way -- but this will not fix the error code.
>>>>>>
>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>> wires
>>>>> or
>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>> certainly
>>>>>> would not spend time and money on completely unrelated systems,
>>>>>> especially
>>>>>> when those systems have their own series of codes to tell me when
>>>>>> they
>>>>>> are
>>>>>> not feeling well.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>> >
>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>> > for
>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>> > than
>>>>> one
>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>> > everything
>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire way.
>>>>>> > Fuel
>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>> >
>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>> > misfire.
>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>> > and
>>>>>> > cleaned. Any ideas where to start looking?
>>>>>> >
>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I can
>>>>>> > get
>>>>>> > the prestone heater hose tee, and flush it with a garden hose. Then
>>>>> drain
>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>> water.
>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>> > right
>>>>>> > mixture?
>>>>>> >
>>>>>> > Thanks,
>>>>>> >
>>>>>> > Carl
>>>>>> >
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>
>>
>
>
11-25-2006, 05:55 PM
#44
Guest
Posts: n/a
Re: P0303 and Coolant
Thanks, Billy. I only ever run the copper Champ's in my 4.0's. $1.29 each. I
have recently (less thank 2000 miles ago) replaced all 6 plugs. I bought one
new and will replace plug #3 today.
Thanks,
Carl
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:9f157$4568bb04$422afc51$4598@FUSE.NET...
> This is from the Factory Service Manual, it is printed in bold typefont:
> "CAUTION: Do not use coolant additives that are
>
> claimed to improve engine cooling."
>
> Under Chemical Cleaning:
>
> CHEMICAL CLEANING
>
> If visual inspection indicates the formation of
>
> sludge or scaly deposits, use a radiator cleaner
>
> (Mopar Radiator Kleen or equivalent) before flushing.
>
> This will soften scale and other deposits and aid the
>
> flushing operation.
>
> CAUTION: Be sure instructions on the container are
>
> followed.
>
>
>
> I used Zerex 'Flush' (the milder or the two) because the girl that had the
> WJ before me allowed her corner Quickie-Lube to 'top off' her expansion
> tank with Prestone Universal which turned the factory G-05 into
> reddish-brown slime.
>
> I also removed the expansion tank and inoperative coolant sensor and
> cleaned them in the basement laundry tub. The sensor worked fine after a
> thorough cleaning and reinstallation.
>
> You can check on the Jeep web site for recall notices, there was a recall
> several years ago to install some reflective insulation on the 4 liter
> engine manifolds.
>
> You may be able to clean spark plug number 3 but then replacement is only
> a couple dollars. The Jeep engines seem to not like the new high tech
> sparkplugs so it would probably be best to avoid the +2, +4, & iridium
> plugs.
>
>
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
>> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
>> with three coil packs. The P0303 and the coolant are completely unrelated
>> issues, I just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
>> misfire. The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
>> the radiator and re-filled it with standard coolant. That's why I want to
>> flush the system. I read that there is a 7-hour flush. Apparently I just
>> add it to the radiator (after draining a small amount, of course), and it
>> cleans the system during a seven-hour drive. I'll be driving back over to
>> Seattle next weekend (a five hour drive) and I plan to change the coolant
>> while I'm there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged, contaminated, or otherwise maulfuntioning system. Per
>> reccomendation here, I will not add it to the XJ. Just curious why they
>> say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>>> Yes. What would you deduce from a P0303 code?
>>>
>>> HINT
>>> The code means the #3 plug is not firing properly, which by definition
>>> is a spark issue.
>>>
>>>
>>>
>>>
>>>
>>> "bllsht" <nospam@dot.net> wrote in message
>>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>>> So just from the P-code you've already determined it's a spark issue.
>>>> Wow. You're good.
>>>>
>>>>
>>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>>> <crwlr@yahoo.com> wrote:
>>>>
>>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>>news:45686645$0$21225$88260bb3@free.teranews. com...
>>>>>> Heh, I read this as two separate issues. ;^)
>>>>>>
>>>>>> You are right that he needs to address the spark issue too.
>>>>>>
>>>>>> Earle
>>>>>>
>>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>>> thing
>>>>>>> by the way -- but this will not fix the error code.
>>>>>>>
>>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>>> wires
>>>>>> or
>>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>>> certainly
>>>>>>> would not spend time and money on completely unrelated systems,
>>>>>>> especially
>>>>>>> when those systems have their own series of codes to tell me when
>>>>>>> they
>>>>>>> are
>>>>>>> not feeling well.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>>> >
>>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>>> > for
>>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>>> > than
>>>>>> one
>>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>>> > everything
>>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
>>>>>>> > way.
>>>>>>> > Fuel
>>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>>> >
>>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>>> > misfire.
>>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>>> > and
>>>>>>> > cleaned. Any ideas where to start looking?
>>>>>>> >
>>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I
>>>>>>> > can get
>>>>>>> > the prestone heater hose tee, and flush it with a garden hose.
>>>>>>> > Then
>>>>>> drain
>>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>>> water.
>>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>>> > right
>>>>>>> > mixture?
>>>>>>> >
>>>>>>> > Thanks,
>>>>>>> >
>>>>>>> > Carl
>>>>>>> >
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>>
>>>
>>
>>
>
>
have recently (less thank 2000 miles ago) replaced all 6 plugs. I bought one
new and will replace plug #3 today.
Thanks,
Carl
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:9f157$4568bb04$422afc51$4598@FUSE.NET...
> This is from the Factory Service Manual, it is printed in bold typefont:
> "CAUTION: Do not use coolant additives that are
>
> claimed to improve engine cooling."
>
> Under Chemical Cleaning:
>
> CHEMICAL CLEANING
>
> If visual inspection indicates the formation of
>
> sludge or scaly deposits, use a radiator cleaner
>
> (Mopar Radiator Kleen or equivalent) before flushing.
>
> This will soften scale and other deposits and aid the
>
> flushing operation.
>
> CAUTION: Be sure instructions on the container are
>
> followed.
>
>
>
> I used Zerex 'Flush' (the milder or the two) because the girl that had the
> WJ before me allowed her corner Quickie-Lube to 'top off' her expansion
> tank with Prestone Universal which turned the factory G-05 into
> reddish-brown slime.
>
> I also removed the expansion tank and inoperative coolant sensor and
> cleaned them in the basement laundry tub. The sensor worked fine after a
> thorough cleaning and reinstallation.
>
> You can check on the Jeep web site for recall notices, there was a recall
> several years ago to install some reflective insulation on the 4 liter
> engine manifolds.
>
> You may be able to clean spark plug number 3 but then replacement is only
> a couple dollars. The Jeep engines seem to not like the new high tech
> sparkplugs so it would probably be best to avoid the +2, +4, & iridium
> plugs.
>
>
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
>> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
>> with three coil packs. The P0303 and the coolant are completely unrelated
>> issues, I just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
>> misfire. The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
>> the radiator and re-filled it with standard coolant. That's why I want to
>> flush the system. I read that there is a 7-hour flush. Apparently I just
>> add it to the radiator (after draining a small amount, of course), and it
>> cleans the system during a seven-hour drive. I'll be driving back over to
>> Seattle next weekend (a five hour drive) and I plan to change the coolant
>> while I'm there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged, contaminated, or otherwise maulfuntioning system. Per
>> reccomendation here, I will not add it to the XJ. Just curious why they
>> say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>>> Yes. What would you deduce from a P0303 code?
>>>
>>> HINT
>>> The code means the #3 plug is not firing properly, which by definition
>>> is a spark issue.
>>>
>>>
>>>
>>>
>>>
>>> "bllsht" <nospam@dot.net> wrote in message
>>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>>> So just from the P-code you've already determined it's a spark issue.
>>>> Wow. You're good.
>>>>
>>>>
>>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>>> <crwlr@yahoo.com> wrote:
>>>>
>>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>>news:45686645$0$21225$88260bb3@free.teranews. com...
>>>>>> Heh, I read this as two separate issues. ;^)
>>>>>>
>>>>>> You are right that he needs to address the spark issue too.
>>>>>>
>>>>>> Earle
>>>>>>
>>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>>> thing
>>>>>>> by the way -- but this will not fix the error code.
>>>>>>>
>>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>>> wires
>>>>>> or
>>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>>> certainly
>>>>>>> would not spend time and money on completely unrelated systems,
>>>>>>> especially
>>>>>>> when those systems have their own series of codes to tell me when
>>>>>>> they
>>>>>>> are
>>>>>>> not feeling well.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>>> >
>>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>>> > for
>>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>>> > than
>>>>>> one
>>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>>> > everything
>>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
>>>>>>> > way.
>>>>>>> > Fuel
>>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>>> >
>>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>>> > misfire.
>>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>>> > and
>>>>>>> > cleaned. Any ideas where to start looking?
>>>>>>> >
>>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I
>>>>>>> > can get
>>>>>>> > the prestone heater hose tee, and flush it with a garden hose.
>>>>>>> > Then
>>>>>> drain
>>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>>> water.
>>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>>> > right
>>>>>>> > mixture?
>>>>>>> >
>>>>>>> > Thanks,
>>>>>>> >
>>>>>>> > Carl
>>>>>>> >
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>>
>>>
>>
>>
>
>
11-25-2006, 05:55 PM
#45
Guest
Posts: n/a
Re: P0303 and Coolant
Thanks, Billy. I only ever run the copper Champ's in my 4.0's. $1.29 each. I
have recently (less thank 2000 miles ago) replaced all 6 plugs. I bought one
new and will replace plug #3 today.
Thanks,
Carl
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:9f157$4568bb04$422afc51$4598@FUSE.NET...
> This is from the Factory Service Manual, it is printed in bold typefont:
> "CAUTION: Do not use coolant additives that are
>
> claimed to improve engine cooling."
>
> Under Chemical Cleaning:
>
> CHEMICAL CLEANING
>
> If visual inspection indicates the formation of
>
> sludge or scaly deposits, use a radiator cleaner
>
> (Mopar Radiator Kleen or equivalent) before flushing.
>
> This will soften scale and other deposits and aid the
>
> flushing operation.
>
> CAUTION: Be sure instructions on the container are
>
> followed.
>
>
>
> I used Zerex 'Flush' (the milder or the two) because the girl that had the
> WJ before me allowed her corner Quickie-Lube to 'top off' her expansion
> tank with Prestone Universal which turned the factory G-05 into
> reddish-brown slime.
>
> I also removed the expansion tank and inoperative coolant sensor and
> cleaned them in the basement laundry tub. The sensor worked fine after a
> thorough cleaning and reinstallation.
>
> You can check on the Jeep web site for recall notices, there was a recall
> several years ago to install some reflective insulation on the 4 liter
> engine manifolds.
>
> You may be able to clean spark plug number 3 but then replacement is only
> a couple dollars. The Jeep engines seem to not like the new high tech
> sparkplugs so it would probably be best to avoid the +2, +4, & iridium
> plugs.
>
>
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
>> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
>> with three coil packs. The P0303 and the coolant are completely unrelated
>> issues, I just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
>> misfire. The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
>> the radiator and re-filled it with standard coolant. That's why I want to
>> flush the system. I read that there is a 7-hour flush. Apparently I just
>> add it to the radiator (after draining a small amount, of course), and it
>> cleans the system during a seven-hour drive. I'll be driving back over to
>> Seattle next weekend (a five hour drive) and I plan to change the coolant
>> while I'm there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged, contaminated, or otherwise maulfuntioning system. Per
>> reccomendation here, I will not add it to the XJ. Just curious why they
>> say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>>> Yes. What would you deduce from a P0303 code?
>>>
>>> HINT
>>> The code means the #3 plug is not firing properly, which by definition
>>> is a spark issue.
>>>
>>>
>>>
>>>
>>>
>>> "bllsht" <nospam@dot.net> wrote in message
>>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>>> So just from the P-code you've already determined it's a spark issue.
>>>> Wow. You're good.
>>>>
>>>>
>>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>>> <crwlr@yahoo.com> wrote:
>>>>
>>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>>news:45686645$0$21225$88260bb3@free.teranews. com...
>>>>>> Heh, I read this as two separate issues. ;^)
>>>>>>
>>>>>> You are right that he needs to address the spark issue too.
>>>>>>
>>>>>> Earle
>>>>>>
>>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>>> thing
>>>>>>> by the way -- but this will not fix the error code.
>>>>>>>
>>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>>> wires
>>>>>> or
>>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>>> certainly
>>>>>>> would not spend time and money on completely unrelated systems,
>>>>>>> especially
>>>>>>> when those systems have their own series of codes to tell me when
>>>>>>> they
>>>>>>> are
>>>>>>> not feeling well.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>>> >
>>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>>> > for
>>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>>> > than
>>>>>> one
>>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>>> > everything
>>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
>>>>>>> > way.
>>>>>>> > Fuel
>>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>>> >
>>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>>> > misfire.
>>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>>> > and
>>>>>>> > cleaned. Any ideas where to start looking?
>>>>>>> >
>>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I
>>>>>>> > can get
>>>>>>> > the prestone heater hose tee, and flush it with a garden hose.
>>>>>>> > Then
>>>>>> drain
>>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>>> water.
>>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>>> > right
>>>>>>> > mixture?
>>>>>>> >
>>>>>>> > Thanks,
>>>>>>> >
>>>>>>> > Carl
>>>>>>> >
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>>
>>>
>>
>>
>
>
have recently (less thank 2000 miles ago) replaced all 6 plugs. I bought one
new and will replace plug #3 today.
Thanks,
Carl
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:9f157$4568bb04$422afc51$4598@FUSE.NET...
> This is from the Factory Service Manual, it is printed in bold typefont:
> "CAUTION: Do not use coolant additives that are
>
> claimed to improve engine cooling."
>
> Under Chemical Cleaning:
>
> CHEMICAL CLEANING
>
> If visual inspection indicates the formation of
>
> sludge or scaly deposits, use a radiator cleaner
>
> (Mopar Radiator Kleen or equivalent) before flushing.
>
> This will soften scale and other deposits and aid the
>
> flushing operation.
>
> CAUTION: Be sure instructions on the container are
>
> followed.
>
>
>
> I used Zerex 'Flush' (the milder or the two) because the girl that had the
> WJ before me allowed her corner Quickie-Lube to 'top off' her expansion
> tank with Prestone Universal which turned the factory G-05 into
> reddish-brown slime.
>
> I also removed the expansion tank and inoperative coolant sensor and
> cleaned them in the basement laundry tub. The sensor worked fine after a
> thorough cleaning and reinstallation.
>
> You can check on the Jeep web site for recall notices, there was a recall
> several years ago to install some reflective insulation on the 4 liter
> engine manifolds.
>
> You may be able to clean spark plug number 3 but then replacement is only
> a couple dollars. The Jeep engines seem to not like the new high tech
> sparkplugs so it would probably be best to avoid the +2, +4, & iridium
> plugs.
>
>
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
>> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
>> with three coil packs. The P0303 and the coolant are completely unrelated
>> issues, I just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
>> misfire. The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
>> the radiator and re-filled it with standard coolant. That's why I want to
>> flush the system. I read that there is a 7-hour flush. Apparently I just
>> add it to the radiator (after draining a small amount, of course), and it
>> cleans the system during a seven-hour drive. I'll be driving back over to
>> Seattle next weekend (a five hour drive) and I plan to change the coolant
>> while I'm there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged, contaminated, or otherwise maulfuntioning system. Per
>> reccomendation here, I will not add it to the XJ. Just curious why they
>> say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>>> Yes. What would you deduce from a P0303 code?
>>>
>>> HINT
>>> The code means the #3 plug is not firing properly, which by definition
>>> is a spark issue.
>>>
>>>
>>>
>>>
>>>
>>> "bllsht" <nospam@dot.net> wrote in message
>>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>>> So just from the P-code you've already determined it's a spark issue.
>>>> Wow. You're good.
>>>>
>>>>
>>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>>> <crwlr@yahoo.com> wrote:
>>>>
>>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>>news:45686645$0$21225$88260bb3@free.teranews. com...
>>>>>> Heh, I read this as two separate issues. ;^)
>>>>>>
>>>>>> You are right that he needs to address the spark issue too.
>>>>>>
>>>>>> Earle
>>>>>>
>>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>>> thing
>>>>>>> by the way -- but this will not fix the error code.
>>>>>>>
>>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>>> wires
>>>>>> or
>>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>>> certainly
>>>>>>> would not spend time and money on completely unrelated systems,
>>>>>>> especially
>>>>>>> when those systems have their own series of codes to tell me when
>>>>>>> they
>>>>>>> are
>>>>>>> not feeling well.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>>> >
>>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>>> > for
>>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>>> > than
>>>>>> one
>>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>>> > everything
>>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
>>>>>>> > way.
>>>>>>> > Fuel
>>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>>> >
>>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>>> > misfire.
>>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>>> > and
>>>>>>> > cleaned. Any ideas where to start looking?
>>>>>>> >
>>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I
>>>>>>> > can get
>>>>>>> > the prestone heater hose tee, and flush it with a garden hose.
>>>>>>> > Then
>>>>>> drain
>>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>>> water.
>>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>>> > right
>>>>>>> > mixture?
>>>>>>> >
>>>>>>> > Thanks,
>>>>>>> >
>>>>>>> > Carl
>>>>>>> >
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>>
>>>
>>
>>
>
>
11-25-2006, 05:55 PM
#46
Guest
Posts: n/a
Re: P0303 and Coolant
Thanks, Billy. I only ever run the copper Champ's in my 4.0's. $1.29 each. I
have recently (less thank 2000 miles ago) replaced all 6 plugs. I bought one
new and will replace plug #3 today.
Thanks,
Carl
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:9f157$4568bb04$422afc51$4598@FUSE.NET...
> This is from the Factory Service Manual, it is printed in bold typefont:
> "CAUTION: Do not use coolant additives that are
>
> claimed to improve engine cooling."
>
> Under Chemical Cleaning:
>
> CHEMICAL CLEANING
>
> If visual inspection indicates the formation of
>
> sludge or scaly deposits, use a radiator cleaner
>
> (Mopar Radiator Kleen or equivalent) before flushing.
>
> This will soften scale and other deposits and aid the
>
> flushing operation.
>
> CAUTION: Be sure instructions on the container are
>
> followed.
>
>
>
> I used Zerex 'Flush' (the milder or the two) because the girl that had the
> WJ before me allowed her corner Quickie-Lube to 'top off' her expansion
> tank with Prestone Universal which turned the factory G-05 into
> reddish-brown slime.
>
> I also removed the expansion tank and inoperative coolant sensor and
> cleaned them in the basement laundry tub. The sensor worked fine after a
> thorough cleaning and reinstallation.
>
> You can check on the Jeep web site for recall notices, there was a recall
> several years ago to install some reflective insulation on the 4 liter
> engine manifolds.
>
> You may be able to clean spark plug number 3 but then replacement is only
> a couple dollars. The Jeep engines seem to not like the new high tech
> sparkplugs so it would probably be best to avoid the +2, +4, & iridium
> plugs.
>
>
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
>> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
>> with three coil packs. The P0303 and the coolant are completely unrelated
>> issues, I just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
>> misfire. The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
>> the radiator and re-filled it with standard coolant. That's why I want to
>> flush the system. I read that there is a 7-hour flush. Apparently I just
>> add it to the radiator (after draining a small amount, of course), and it
>> cleans the system during a seven-hour drive. I'll be driving back over to
>> Seattle next weekend (a five hour drive) and I plan to change the coolant
>> while I'm there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged, contaminated, or otherwise maulfuntioning system. Per
>> reccomendation here, I will not add it to the XJ. Just curious why they
>> say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>>> Yes. What would you deduce from a P0303 code?
>>>
>>> HINT
>>> The code means the #3 plug is not firing properly, which by definition
>>> is a spark issue.
>>>
>>>
>>>
>>>
>>>
>>> "bllsht" <nospam@dot.net> wrote in message
>>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>>> So just from the P-code you've already determined it's a spark issue.
>>>> Wow. You're good.
>>>>
>>>>
>>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>>> <crwlr@yahoo.com> wrote:
>>>>
>>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>>news:45686645$0$21225$88260bb3@free.teranews. com...
>>>>>> Heh, I read this as two separate issues. ;^)
>>>>>>
>>>>>> You are right that he needs to address the spark issue too.
>>>>>>
>>>>>> Earle
>>>>>>
>>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>>> thing
>>>>>>> by the way -- but this will not fix the error code.
>>>>>>>
>>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>>> wires
>>>>>> or
>>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>>> certainly
>>>>>>> would not spend time and money on completely unrelated systems,
>>>>>>> especially
>>>>>>> when those systems have their own series of codes to tell me when
>>>>>>> they
>>>>>>> are
>>>>>>> not feeling well.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>>> >
>>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>>> > for
>>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>>> > than
>>>>>> one
>>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>>> > everything
>>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
>>>>>>> > way.
>>>>>>> > Fuel
>>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>>> >
>>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>>> > misfire.
>>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>>> > and
>>>>>>> > cleaned. Any ideas where to start looking?
>>>>>>> >
>>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I
>>>>>>> > can get
>>>>>>> > the prestone heater hose tee, and flush it with a garden hose.
>>>>>>> > Then
>>>>>> drain
>>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>>> water.
>>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>>> > right
>>>>>>> > mixture?
>>>>>>> >
>>>>>>> > Thanks,
>>>>>>> >
>>>>>>> > Carl
>>>>>>> >
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>>
>>>
>>
>>
>
>
have recently (less thank 2000 miles ago) replaced all 6 plugs. I bought one
new and will replace plug #3 today.
Thanks,
Carl
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:9f157$4568bb04$422afc51$4598@FUSE.NET...
> This is from the Factory Service Manual, it is printed in bold typefont:
> "CAUTION: Do not use coolant additives that are
>
> claimed to improve engine cooling."
>
> Under Chemical Cleaning:
>
> CHEMICAL CLEANING
>
> If visual inspection indicates the formation of
>
> sludge or scaly deposits, use a radiator cleaner
>
> (Mopar Radiator Kleen or equivalent) before flushing.
>
> This will soften scale and other deposits and aid the
>
> flushing operation.
>
> CAUTION: Be sure instructions on the container are
>
> followed.
>
>
>
> I used Zerex 'Flush' (the milder or the two) because the girl that had the
> WJ before me allowed her corner Quickie-Lube to 'top off' her expansion
> tank with Prestone Universal which turned the factory G-05 into
> reddish-brown slime.
>
> I also removed the expansion tank and inoperative coolant sensor and
> cleaned them in the basement laundry tub. The sensor worked fine after a
> thorough cleaning and reinstallation.
>
> You can check on the Jeep web site for recall notices, there was a recall
> several years ago to install some reflective insulation on the 4 liter
> engine manifolds.
>
> You may be able to clean spark plug number 3 but then replacement is only
> a couple dollars. The Jeep engines seem to not like the new high tech
> sparkplugs so it would probably be best to avoid the +2, +4, & iridium
> plugs.
>
>
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
>> anyway. There are no plug wires on a 2k. Instead, there is a coil rail
>> with three coil packs. The P0303 and the coolant are completely unrelated
>> issues, I just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
>> misfire. The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
>> the radiator and re-filled it with standard coolant. That's why I want to
>> flush the system. I read that there is a 7-hour flush. Apparently I just
>> add it to the radiator (after draining a small amount, of course), and it
>> cleans the system during a seven-hour drive. I'll be driving back over to
>> Seattle next weekend (a five hour drive) and I plan to change the coolant
>> while I'm there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged, contaminated, or otherwise maulfuntioning system. Per
>> reccomendation here, I will not add it to the XJ. Just curious why they
>> say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>>> Yes. What would you deduce from a P0303 code?
>>>
>>> HINT
>>> The code means the #3 plug is not firing properly, which by definition
>>> is a spark issue.
>>>
>>>
>>>
>>>
>>>
>>> "bllsht" <nospam@dot.net> wrote in message
>>> news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>>>> So just from the P-code you've already determined it's a spark issue.
>>>> Wow. You're good.
>>>>
>>>>
>>>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>>>> <crwlr@yahoo.com> wrote:
>>>>
>>>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>>>news:45686645$0$21225$88260bb3@free.teranews. com...
>>>>>> Heh, I read this as two separate issues. ;^)
>>>>>>
>>>>>> You are right that he needs to address the spark issue too.
>>>>>>
>>>>>> Earle
>>>>>>
>>>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>>>> thing
>>>>>>> by the way -- but this will not fix the error code.
>>>>>>>
>>>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>>>> wires
>>>>>> or
>>>>>>> the coil (if the motor has a dedicated coil for each plug). I
>>>>>>> certainly
>>>>>>> would not spend time and money on completely unrelated systems,
>>>>>>> especially
>>>>>>> when those systems have their own series of codes to tell me when
>>>>>>> they
>>>>>>> are
>>>>>>> not feeling well.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>>>> >
>>>>>>> > On the way back from Seattle today, I drove down a washboard road
>>>>>>> > for
>>>>>>> > about 7 miles, got gas and went to get back on the highway. Less
>>>>>>> > than
>>>>>> one
>>>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>>>> > everything
>>>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
>>>>>>> > way.
>>>>>>> > Fuel
>>>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>>>> >
>>>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>>>> > misfire.
>>>>>>> > Plugs are new copper champ's, Throttle body was recently removed
>>>>>>> > and
>>>>>>> > cleaned. Any ideas where to start looking?
>>>>>>> >
>>>>>>> > Also, I'm planning on changing the coolant soon. I have heard I
>>>>>>> > can get
>>>>>>> > the prestone heater hose tee, and flush it with a garden hose.
>>>>>>> > Then
>>>>>> drain
>>>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>>>> water.
>>>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>>>> > right
>>>>>>> > mixture?
>>>>>>> >
>>>>>>> > Thanks,
>>>>>>> >
>>>>>>> > Carl
>>>>>>> >
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>>>
>>>
>>
>>
>
>
11-25-2006, 05:57 PM
#47
Guest
Posts: n/a
Re: P0303 and Coolant
Positive results meaning a much lower reading on the gauge. For now, I'll
skip the chemical flush and the water wetter.
Thanks for the responses. I will replace plug #3 today and find out more
about injector #3 insulation.
Carl
"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
news:4568a6f5$0$21090$88260bb3@free.teranews.com.. .
> Brown coolant is undoubtedly bad, but it doesn't necessarily translate to
> scale and sludge in the coolant chambers of the block or blocked radiator
> tubes. I would flush the system with water, and only resort to a chemical
> flush if big pieces came out. Otherwise, you can assume that most of it
> is
> already in suspension. Another tell-tale is the bottom of the overflow
> reservoir. Nasty pieces will tend to accumulate there because it doesn't
> really have circulation. I am against flushing with chemicals unless you
> have reason to believe that they are necessary, and then you have to take
> extra care to rinse them all out afterwards.
>
> When you say "positive results with using water wetter in an all ready
> good
> cooling system" what do you mean exactly? Lower reading on the
> temperature
> gauge? I don't get how you can tell, that this stuff is doing what they
> say
> it does.
>
> Earle
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway.
>> There are no plug wires on a 2k. Instead, there is a coil rail with three
>> coil packs. The P0303 and the coolant are completely unrelated issues, I
>> just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire.
>> The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
> the
>> radiator and re-filled it with standard coolant. That's why I want to
> flush
>> the system. I read that there is a 7-hour flush. Apparently I just add it
> to
>> the radiator (after draining a small amount, of course), and it cleans
>> the
>> system during a seven-hour drive. I'll be driving back over to Seattle
> next
>> weekend (a five hour drive) and I plan to change the coolant while I'm
>> there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged,
>> contaminated, or otherwise maulfuntioning system. Per reccomendation
>> here,
> I
>> will not add it to the XJ. Just curious why they say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> > Yes. What would you deduce from a P0303 code?
>> >
>> > HINT
>> > The code means the #3 plug is not firing properly, which by definition
> is
>> > a spark issue.
>> >
>> >
>> >
>> >
>> >
>> > "bllsht" <nospam@dot.net> wrote in message
>> > news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>> >> So just from the P-code you've already determined it's a spark issue.
>> >> Wow. You're good.
>> >>
>> >>
>> >> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>> >> <crwlr@yahoo.com> wrote:
>> >>
>> >>>Relative to the P-code, ALL he needs to address is the spark issue.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>> >>>news:45686645$0$21225$88260bb3@free.teranews.co m...
>> >>>> Heh, I read this as two separate issues. ;^)
>> >>>>
>> >>>> You are right that he needs to address the spark issue too.
>> >>>>
>> >>>> Earle
>> >>>>
>> >>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> >>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>> >>>>> You can drain and refill the coolant all you want -- probably a
>> >>>>> good
>> >>>>> thing
>> >>>>> by the way -- but this will not fix the error code.
>> >>>>>
>> >>>>> If I got the code you got, I'd be looking at stuff like spark plug
>> >>>>> wires
>> >>>> or
>> >>>>> the coil (if the motor has a dedicated coil for each plug). I
>> >>>>> certainly
>> >>>>> would not spend time and money on completely unrelated systems,
>> >>>>> especially
>> >>>>> when those systems have their own series of codes to tell me when
> they
>> >>>>> are
>> >>>>> not feeling well.
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>> >>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>> >>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>> >>>>> >
>> >>>>> > On the way back from Seattle today, I drove down a washboard road
>> >>>>> > for
>> >>>>> > about 7 miles, got gas and went to get back on the highway. Less
>> >>>>> > than
>> >>>> one
>> >>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>> >>>>> > everything
>> >>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
> way.
>> >>>>> > Fuel
>> >>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>> >>>>> >
>> >>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>> >>>>> > misfire.
>> >>>>> > Plugs are new copper champ's, Throttle body was recently removed
> and
>> >>>>> > cleaned. Any ideas where to start looking?
>> >>>>> >
>> >>>>> > Also, I'm planning on changing the coolant soon. I have heard I
> can
>> >>>>> > get
>> >>>>> > the prestone heater hose tee, and flush it with a garden hose.
> Then
>> >>>> drain
>> >>>>> > the radiator thru the lower hose, fill the radiator with
>> >>>>> > distilled
>> >>>> water.
>> >>>>> > Drain again, and refill with 100% coolant. Will this give me the
>> >>>>> > right
>> >>>>> > mixture?
>> >>>>> >
>> >>>>> > Thanks,
>> >>>>> >
>> >>>>> > Carl
>> >>>>> >
>> >>>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>> --
>> >>>> Posted via a free Usenet account from http://www.teranews.com
>> >>>>
>> >
>>
>>
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>
skip the chemical flush and the water wetter.
Thanks for the responses. I will replace plug #3 today and find out more
about injector #3 insulation.
Carl
"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
news:4568a6f5$0$21090$88260bb3@free.teranews.com.. .
> Brown coolant is undoubtedly bad, but it doesn't necessarily translate to
> scale and sludge in the coolant chambers of the block or blocked radiator
> tubes. I would flush the system with water, and only resort to a chemical
> flush if big pieces came out. Otherwise, you can assume that most of it
> is
> already in suspension. Another tell-tale is the bottom of the overflow
> reservoir. Nasty pieces will tend to accumulate there because it doesn't
> really have circulation. I am against flushing with chemicals unless you
> have reason to believe that they are necessary, and then you have to take
> extra care to rinse them all out afterwards.
>
> When you say "positive results with using water wetter in an all ready
> good
> cooling system" what do you mean exactly? Lower reading on the
> temperature
> gauge? I don't get how you can tell, that this stuff is doing what they
> say
> it does.
>
> Earle
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway.
>> There are no plug wires on a 2k. Instead, there is a coil rail with three
>> coil packs. The P0303 and the coolant are completely unrelated issues, I
>> just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire.
>> The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
> the
>> radiator and re-filled it with standard coolant. That's why I want to
> flush
>> the system. I read that there is a 7-hour flush. Apparently I just add it
> to
>> the radiator (after draining a small amount, of course), and it cleans
>> the
>> system during a seven-hour drive. I'll be driving back over to Seattle
> next
>> weekend (a five hour drive) and I plan to change the coolant while I'm
>> there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged,
>> contaminated, or otherwise maulfuntioning system. Per reccomendation
>> here,
> I
>> will not add it to the XJ. Just curious why they say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> > Yes. What would you deduce from a P0303 code?
>> >
>> > HINT
>> > The code means the #3 plug is not firing properly, which by definition
> is
>> > a spark issue.
>> >
>> >
>> >
>> >
>> >
>> > "bllsht" <nospam@dot.net> wrote in message
>> > news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>> >> So just from the P-code you've already determined it's a spark issue.
>> >> Wow. You're good.
>> >>
>> >>
>> >> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>> >> <crwlr@yahoo.com> wrote:
>> >>
>> >>>Relative to the P-code, ALL he needs to address is the spark issue.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>> >>>news:45686645$0$21225$88260bb3@free.teranews.co m...
>> >>>> Heh, I read this as two separate issues. ;^)
>> >>>>
>> >>>> You are right that he needs to address the spark issue too.
>> >>>>
>> >>>> Earle
>> >>>>
>> >>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> >>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>> >>>>> You can drain and refill the coolant all you want -- probably a
>> >>>>> good
>> >>>>> thing
>> >>>>> by the way -- but this will not fix the error code.
>> >>>>>
>> >>>>> If I got the code you got, I'd be looking at stuff like spark plug
>> >>>>> wires
>> >>>> or
>> >>>>> the coil (if the motor has a dedicated coil for each plug). I
>> >>>>> certainly
>> >>>>> would not spend time and money on completely unrelated systems,
>> >>>>> especially
>> >>>>> when those systems have their own series of codes to tell me when
> they
>> >>>>> are
>> >>>>> not feeling well.
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>> >>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>> >>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>> >>>>> >
>> >>>>> > On the way back from Seattle today, I drove down a washboard road
>> >>>>> > for
>> >>>>> > about 7 miles, got gas and went to get back on the highway. Less
>> >>>>> > than
>> >>>> one
>> >>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>> >>>>> > everything
>> >>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
> way.
>> >>>>> > Fuel
>> >>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>> >>>>> >
>> >>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>> >>>>> > misfire.
>> >>>>> > Plugs are new copper champ's, Throttle body was recently removed
> and
>> >>>>> > cleaned. Any ideas where to start looking?
>> >>>>> >
>> >>>>> > Also, I'm planning on changing the coolant soon. I have heard I
> can
>> >>>>> > get
>> >>>>> > the prestone heater hose tee, and flush it with a garden hose.
> Then
>> >>>> drain
>> >>>>> > the radiator thru the lower hose, fill the radiator with
>> >>>>> > distilled
>> >>>> water.
>> >>>>> > Drain again, and refill with 100% coolant. Will this give me the
>> >>>>> > right
>> >>>>> > mixture?
>> >>>>> >
>> >>>>> > Thanks,
>> >>>>> >
>> >>>>> > Carl
>> >>>>> >
>> >>>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>> --
>> >>>> Posted via a free Usenet account from http://www.teranews.com
>> >>>>
>> >
>>
>>
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>
11-25-2006, 05:57 PM
#48
Guest
Posts: n/a
Re: P0303 and Coolant
Positive results meaning a much lower reading on the gauge. For now, I'll
skip the chemical flush and the water wetter.
Thanks for the responses. I will replace plug #3 today and find out more
about injector #3 insulation.
Carl
"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
news:4568a6f5$0$21090$88260bb3@free.teranews.com.. .
> Brown coolant is undoubtedly bad, but it doesn't necessarily translate to
> scale and sludge in the coolant chambers of the block or blocked radiator
> tubes. I would flush the system with water, and only resort to a chemical
> flush if big pieces came out. Otherwise, you can assume that most of it
> is
> already in suspension. Another tell-tale is the bottom of the overflow
> reservoir. Nasty pieces will tend to accumulate there because it doesn't
> really have circulation. I am against flushing with chemicals unless you
> have reason to believe that they are necessary, and then you have to take
> extra care to rinse them all out afterwards.
>
> When you say "positive results with using water wetter in an all ready
> good
> cooling system" what do you mean exactly? Lower reading on the
> temperature
> gauge? I don't get how you can tell, that this stuff is doing what they
> say
> it does.
>
> Earle
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway.
>> There are no plug wires on a 2k. Instead, there is a coil rail with three
>> coil packs. The P0303 and the coolant are completely unrelated issues, I
>> just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire.
>> The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
> the
>> radiator and re-filled it with standard coolant. That's why I want to
> flush
>> the system. I read that there is a 7-hour flush. Apparently I just add it
> to
>> the radiator (after draining a small amount, of course), and it cleans
>> the
>> system during a seven-hour drive. I'll be driving back over to Seattle
> next
>> weekend (a five hour drive) and I plan to change the coolant while I'm
>> there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged,
>> contaminated, or otherwise maulfuntioning system. Per reccomendation
>> here,
> I
>> will not add it to the XJ. Just curious why they say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> > Yes. What would you deduce from a P0303 code?
>> >
>> > HINT
>> > The code means the #3 plug is not firing properly, which by definition
> is
>> > a spark issue.
>> >
>> >
>> >
>> >
>> >
>> > "bllsht" <nospam@dot.net> wrote in message
>> > news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>> >> So just from the P-code you've already determined it's a spark issue.
>> >> Wow. You're good.
>> >>
>> >>
>> >> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>> >> <crwlr@yahoo.com> wrote:
>> >>
>> >>>Relative to the P-code, ALL he needs to address is the spark issue.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>> >>>news:45686645$0$21225$88260bb3@free.teranews.co m...
>> >>>> Heh, I read this as two separate issues. ;^)
>> >>>>
>> >>>> You are right that he needs to address the spark issue too.
>> >>>>
>> >>>> Earle
>> >>>>
>> >>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> >>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>> >>>>> You can drain and refill the coolant all you want -- probably a
>> >>>>> good
>> >>>>> thing
>> >>>>> by the way -- but this will not fix the error code.
>> >>>>>
>> >>>>> If I got the code you got, I'd be looking at stuff like spark plug
>> >>>>> wires
>> >>>> or
>> >>>>> the coil (if the motor has a dedicated coil for each plug). I
>> >>>>> certainly
>> >>>>> would not spend time and money on completely unrelated systems,
>> >>>>> especially
>> >>>>> when those systems have their own series of codes to tell me when
> they
>> >>>>> are
>> >>>>> not feeling well.
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>> >>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>> >>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>> >>>>> >
>> >>>>> > On the way back from Seattle today, I drove down a washboard road
>> >>>>> > for
>> >>>>> > about 7 miles, got gas and went to get back on the highway. Less
>> >>>>> > than
>> >>>> one
>> >>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>> >>>>> > everything
>> >>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
> way.
>> >>>>> > Fuel
>> >>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>> >>>>> >
>> >>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>> >>>>> > misfire.
>> >>>>> > Plugs are new copper champ's, Throttle body was recently removed
> and
>> >>>>> > cleaned. Any ideas where to start looking?
>> >>>>> >
>> >>>>> > Also, I'm planning on changing the coolant soon. I have heard I
> can
>> >>>>> > get
>> >>>>> > the prestone heater hose tee, and flush it with a garden hose.
> Then
>> >>>> drain
>> >>>>> > the radiator thru the lower hose, fill the radiator with
>> >>>>> > distilled
>> >>>> water.
>> >>>>> > Drain again, and refill with 100% coolant. Will this give me the
>> >>>>> > right
>> >>>>> > mixture?
>> >>>>> >
>> >>>>> > Thanks,
>> >>>>> >
>> >>>>> > Carl
>> >>>>> >
>> >>>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>> --
>> >>>> Posted via a free Usenet account from http://www.teranews.com
>> >>>>
>> >
>>
>>
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>
skip the chemical flush and the water wetter.
Thanks for the responses. I will replace plug #3 today and find out more
about injector #3 insulation.
Carl
"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
news:4568a6f5$0$21090$88260bb3@free.teranews.com.. .
> Brown coolant is undoubtedly bad, but it doesn't necessarily translate to
> scale and sludge in the coolant chambers of the block or blocked radiator
> tubes. I would flush the system with water, and only resort to a chemical
> flush if big pieces came out. Otherwise, you can assume that most of it
> is
> already in suspension. Another tell-tale is the bottom of the overflow
> reservoir. Nasty pieces will tend to accumulate there because it doesn't
> really have circulation. I am against flushing with chemicals unless you
> have reason to believe that they are necessary, and then you have to take
> extra care to rinse them all out afterwards.
>
> When you say "positive results with using water wetter in an all ready
> good
> cooling system" what do you mean exactly? Lower reading on the
> temperature
> gauge? I don't get how you can tell, that this stuff is doing what they
> say
> it does.
>
> Earle
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway.
>> There are no plug wires on a 2k. Instead, there is a coil rail with three
>> coil packs. The P0303 and the coolant are completely unrelated issues, I
>> just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire.
>> The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
> the
>> radiator and re-filled it with standard coolant. That's why I want to
> flush
>> the system. I read that there is a 7-hour flush. Apparently I just add it
> to
>> the radiator (after draining a small amount, of course), and it cleans
>> the
>> system during a seven-hour drive. I'll be driving back over to Seattle
> next
>> weekend (a five hour drive) and I plan to change the coolant while I'm
>> there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged,
>> contaminated, or otherwise maulfuntioning system. Per reccomendation
>> here,
> I
>> will not add it to the XJ. Just curious why they say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> > Yes. What would you deduce from a P0303 code?
>> >
>> > HINT
>> > The code means the #3 plug is not firing properly, which by definition
> is
>> > a spark issue.
>> >
>> >
>> >
>> >
>> >
>> > "bllsht" <nospam@dot.net> wrote in message
>> > news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>> >> So just from the P-code you've already determined it's a spark issue.
>> >> Wow. You're good.
>> >>
>> >>
>> >> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>> >> <crwlr@yahoo.com> wrote:
>> >>
>> >>>Relative to the P-code, ALL he needs to address is the spark issue.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>> >>>news:45686645$0$21225$88260bb3@free.teranews.co m...
>> >>>> Heh, I read this as two separate issues. ;^)
>> >>>>
>> >>>> You are right that he needs to address the spark issue too.
>> >>>>
>> >>>> Earle
>> >>>>
>> >>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> >>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>> >>>>> You can drain and refill the coolant all you want -- probably a
>> >>>>> good
>> >>>>> thing
>> >>>>> by the way -- but this will not fix the error code.
>> >>>>>
>> >>>>> If I got the code you got, I'd be looking at stuff like spark plug
>> >>>>> wires
>> >>>> or
>> >>>>> the coil (if the motor has a dedicated coil for each plug). I
>> >>>>> certainly
>> >>>>> would not spend time and money on completely unrelated systems,
>> >>>>> especially
>> >>>>> when those systems have their own series of codes to tell me when
> they
>> >>>>> are
>> >>>>> not feeling well.
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>> >>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>> >>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>> >>>>> >
>> >>>>> > On the way back from Seattle today, I drove down a washboard road
>> >>>>> > for
>> >>>>> > about 7 miles, got gas and went to get back on the highway. Less
>> >>>>> > than
>> >>>> one
>> >>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>> >>>>> > everything
>> >>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
> way.
>> >>>>> > Fuel
>> >>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>> >>>>> >
>> >>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>> >>>>> > misfire.
>> >>>>> > Plugs are new copper champ's, Throttle body was recently removed
> and
>> >>>>> > cleaned. Any ideas where to start looking?
>> >>>>> >
>> >>>>> > Also, I'm planning on changing the coolant soon. I have heard I
> can
>> >>>>> > get
>> >>>>> > the prestone heater hose tee, and flush it with a garden hose.
> Then
>> >>>> drain
>> >>>>> > the radiator thru the lower hose, fill the radiator with
>> >>>>> > distilled
>> >>>> water.
>> >>>>> > Drain again, and refill with 100% coolant. Will this give me the
>> >>>>> > right
>> >>>>> > mixture?
>> >>>>> >
>> >>>>> > Thanks,
>> >>>>> >
>> >>>>> > Carl
>> >>>>> >
>> >>>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>> --
>> >>>> Posted via a free Usenet account from http://www.teranews.com
>> >>>>
>> >
>>
>>
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>
11-25-2006, 05:57 PM
#49
Guest
Posts: n/a
Re: P0303 and Coolant
Positive results meaning a much lower reading on the gauge. For now, I'll
skip the chemical flush and the water wetter.
Thanks for the responses. I will replace plug #3 today and find out more
about injector #3 insulation.
Carl
"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
news:4568a6f5$0$21090$88260bb3@free.teranews.com.. .
> Brown coolant is undoubtedly bad, but it doesn't necessarily translate to
> scale and sludge in the coolant chambers of the block or blocked radiator
> tubes. I would flush the system with water, and only resort to a chemical
> flush if big pieces came out. Otherwise, you can assume that most of it
> is
> already in suspension. Another tell-tale is the bottom of the overflow
> reservoir. Nasty pieces will tend to accumulate there because it doesn't
> really have circulation. I am against flushing with chemicals unless you
> have reason to believe that they are necessary, and then you have to take
> extra care to rinse them all out afterwards.
>
> When you say "positive results with using water wetter in an all ready
> good
> cooling system" what do you mean exactly? Lower reading on the
> temperature
> gauge? I don't get how you can tell, that this stuff is doing what they
> say
> it does.
>
> Earle
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway.
>> There are no plug wires on a 2k. Instead, there is a coil rail with three
>> coil packs. The P0303 and the coolant are completely unrelated issues, I
>> just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire.
>> The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
> the
>> radiator and re-filled it with standard coolant. That's why I want to
> flush
>> the system. I read that there is a 7-hour flush. Apparently I just add it
> to
>> the radiator (after draining a small amount, of course), and it cleans
>> the
>> system during a seven-hour drive. I'll be driving back over to Seattle
> next
>> weekend (a five hour drive) and I plan to change the coolant while I'm
>> there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged,
>> contaminated, or otherwise maulfuntioning system. Per reccomendation
>> here,
> I
>> will not add it to the XJ. Just curious why they say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> > Yes. What would you deduce from a P0303 code?
>> >
>> > HINT
>> > The code means the #3 plug is not firing properly, which by definition
> is
>> > a spark issue.
>> >
>> >
>> >
>> >
>> >
>> > "bllsht" <nospam@dot.net> wrote in message
>> > news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>> >> So just from the P-code you've already determined it's a spark issue.
>> >> Wow. You're good.
>> >>
>> >>
>> >> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>> >> <crwlr@yahoo.com> wrote:
>> >>
>> >>>Relative to the P-code, ALL he needs to address is the spark issue.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>> >>>news:45686645$0$21225$88260bb3@free.teranews.co m...
>> >>>> Heh, I read this as two separate issues. ;^)
>> >>>>
>> >>>> You are right that he needs to address the spark issue too.
>> >>>>
>> >>>> Earle
>> >>>>
>> >>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> >>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>> >>>>> You can drain and refill the coolant all you want -- probably a
>> >>>>> good
>> >>>>> thing
>> >>>>> by the way -- but this will not fix the error code.
>> >>>>>
>> >>>>> If I got the code you got, I'd be looking at stuff like spark plug
>> >>>>> wires
>> >>>> or
>> >>>>> the coil (if the motor has a dedicated coil for each plug). I
>> >>>>> certainly
>> >>>>> would not spend time and money on completely unrelated systems,
>> >>>>> especially
>> >>>>> when those systems have their own series of codes to tell me when
> they
>> >>>>> are
>> >>>>> not feeling well.
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>> >>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>> >>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>> >>>>> >
>> >>>>> > On the way back from Seattle today, I drove down a washboard road
>> >>>>> > for
>> >>>>> > about 7 miles, got gas and went to get back on the highway. Less
>> >>>>> > than
>> >>>> one
>> >>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>> >>>>> > everything
>> >>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
> way.
>> >>>>> > Fuel
>> >>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>> >>>>> >
>> >>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>> >>>>> > misfire.
>> >>>>> > Plugs are new copper champ's, Throttle body was recently removed
> and
>> >>>>> > cleaned. Any ideas where to start looking?
>> >>>>> >
>> >>>>> > Also, I'm planning on changing the coolant soon. I have heard I
> can
>> >>>>> > get
>> >>>>> > the prestone heater hose tee, and flush it with a garden hose.
> Then
>> >>>> drain
>> >>>>> > the radiator thru the lower hose, fill the radiator with
>> >>>>> > distilled
>> >>>> water.
>> >>>>> > Drain again, and refill with 100% coolant. Will this give me the
>> >>>>> > right
>> >>>>> > mixture?
>> >>>>> >
>> >>>>> > Thanks,
>> >>>>> >
>> >>>>> > Carl
>> >>>>> >
>> >>>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>> --
>> >>>> Posted via a free Usenet account from http://www.teranews.com
>> >>>>
>> >
>>
>>
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>
skip the chemical flush and the water wetter.
Thanks for the responses. I will replace plug #3 today and find out more
about injector #3 insulation.
Carl
"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
news:4568a6f5$0$21090$88260bb3@free.teranews.com.. .
> Brown coolant is undoubtedly bad, but it doesn't necessarily translate to
> scale and sludge in the coolant chambers of the block or blocked radiator
> tubes. I would flush the system with water, and only resort to a chemical
> flush if big pieces came out. Otherwise, you can assume that most of it
> is
> already in suspension. Another tell-tale is the bottom of the overflow
> reservoir. Nasty pieces will tend to accumulate there because it doesn't
> really have circulation. I am against flushing with chemicals unless you
> have reason to believe that they are necessary, and then you have to take
> extra care to rinse them all out afterwards.
>
> When you say "positive results with using water wetter in an all ready
> good
> cooling system" what do you mean exactly? Lower reading on the
> temperature
> gauge? I don't get how you can tell, that this stuff is doing what they
> say
> it does.
>
> Earle
>
> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
> news:BtOdnSkUXY_bLPXYnZ2dnUVZ_vednZ2d@comcast.com. ..
>> Thanks for the responses, guys. I cleared the code last night and drove
>> about 20 miles, it hasn't since returned. I'll change the plug today
> anyway.
>> There are no plug wires on a 2k. Instead, there is a coil rail with three
>> coil packs. The P0303 and the coolant are completely unrelated issues, I
>> just posted in one post to keep the clutter down.
>>
>> My research has shown that the P0303 problem is known to be a heat soak
>> issue with injector #3. Apparently, sometimes the heat from the exhaust
>> manifold will creep up to injector #3 on a hot shutdown, causing a
> misfire.
>> The fix is an insulating wrap around injector #3.
>>
>> The coolant in the radiator right now is brown. I assume someone drained
> the
>> radiator and re-filled it with standard coolant. That's why I want to
> flush
>> the system. I read that there is a 7-hour flush. Apparently I just add it
> to
>> the radiator (after draining a small amount, of course), and it cleans
>> the
>> system during a seven-hour drive. I'll be driving back over to Seattle
> next
>> weekend (a five hour drive) and I plan to change the coolant while I'm
>> there. Am I barking up the right tree here?
>>
>> I have seen positive results with using water wetter in an all ready good
>> cooling system. I would not expect to see results using a it in a
>> clogged,
>> contaminated, or otherwise maulfuntioning system. Per reccomendation
>> here,
> I
>> will not add it to the XJ. Just curious why they say not to use it?
>>
>>
>>
>>
>>
>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> news:RumdndEuPqiUPvXYnZ2dnUVZ_tydnZ2d@ez2.net...
>> > Yes. What would you deduce from a P0303 code?
>> >
>> > HINT
>> > The code means the #3 plug is not firing properly, which by definition
> is
>> > a spark issue.
>> >
>> >
>> >
>> >
>> >
>> > "bllsht" <nospam@dot.net> wrote in message
>> > news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com...
>> >> So just from the P-code you've already determined it's a spark issue.
>> >> Wow. You're good.
>> >>
>> >>
>> >> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>> >> <crwlr@yahoo.com> wrote:
>> >>
>> >>>Relative to the P-code, ALL he needs to address is the spark issue.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>> >>>news:45686645$0$21225$88260bb3@free.teranews.co m...
>> >>>> Heh, I read this as two separate issues. ;^)
>> >>>>
>> >>>> You are right that he needs to address the spark issue too.
>> >>>>
>> >>>> Earle
>> >>>>
>> >>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>> >>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>> >>>>> You can drain and refill the coolant all you want -- probably a
>> >>>>> good
>> >>>>> thing
>> >>>>> by the way -- but this will not fix the error code.
>> >>>>>
>> >>>>> If I got the code you got, I'd be looking at stuff like spark plug
>> >>>>> wires
>> >>>> or
>> >>>>> the coil (if the motor has a dedicated coil for each plug). I
>> >>>>> certainly
>> >>>>> would not spend time and money on completely unrelated systems,
>> >>>>> especially
>> >>>>> when those systems have their own series of codes to tell me when
> they
>> >>>>> are
>> >>>>> not feeling well.
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>> >>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>> >>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>> >>>>> >
>> >>>>> > On the way back from Seattle today, I drove down a washboard road
>> >>>>> > for
>> >>>>> > about 7 miles, got gas and went to get back on the highway. Less
>> >>>>> > than
>> >>>> one
>> >>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>> >>>>> > everything
>> >>>>> > looks OK. Continue around 100 miles home, CEL solid the entire
> way.
>> >>>>> > Fuel
>> >>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>> >>>>> >
>> >>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>> >>>>> > misfire.
>> >>>>> > Plugs are new copper champ's, Throttle body was recently removed
> and
>> >>>>> > cleaned. Any ideas where to start looking?
>> >>>>> >
>> >>>>> > Also, I'm planning on changing the coolant soon. I have heard I
> can
>> >>>>> > get
>> >>>>> > the prestone heater hose tee, and flush it with a garden hose.
> Then
>> >>>> drain
>> >>>>> > the radiator thru the lower hose, fill the radiator with
>> >>>>> > distilled
>> >>>> water.
>> >>>>> > Drain again, and refill with 100% coolant. Will this give me the
>> >>>>> > right
>> >>>>> > mixture?
>> >>>>> >
>> >>>>> > Thanks,
>> >>>>> >
>> >>>>> > Carl
>> >>>>> >
>> >>>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>> --
>> >>>> Posted via a free Usenet account from http://www.teranews.com
>> >>>>
>> >
>>
>>
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>
11-25-2006, 09:07 PM
#50
Guest
Posts: n/a
Re: P0303 and Coolant
P0303 means the PCM has detected a misfire in the #3 cylinder. Do you
see the word SPARK in that definition?
HINT
There's a lot of things that can cause a misfire, and some things that
can cause the PCM to THINK it detects a misfire.
On Sat, 25 Nov 2006 12:09:50 -0800, "Jeff Strickland"
<crwlr@yahoo.com> wrote:
>Yes. What would you deduce from a P0303 code?
>
>HINT
>The code means the #3 plug is not firing properly, which by definition is a
>spark issue.
>
>
>
>
>
>"bllsht" <nospam@dot.net> wrote in message
>news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com.. .
>> So just from the P-code you've already determined it's a spark issue.
>> Wow. You're good.
>>
>>
>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>> <crwlr@yahoo.com> wrote:
>>
>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>
>>>
>>>
>>>
>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>news:45686645$0$21225$88260bb3@free.teranews.co m...
>>>> Heh, I read this as two separate issues. ;^)
>>>>
>>>> You are right that he needs to address the spark issue too.
>>>>
>>>> Earle
>>>>
>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>> thing
>>>>> by the way -- but this will not fix the error code.
>>>>>
>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>> wires
>>>> or
>>>>> the coil (if the motor has a dedicated coil for each plug). I certainly
>>>>> would not spend time and money on completely unrelated systems,
>>>>> especially
>>>>> when those systems have their own series of codes to tell me when they
>>>>> are
>>>>> not feeling well.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>> >
>>>>> > On the way back from Seattle today, I drove down a washboard road for
>>>>> > about 7 miles, got gas and went to get back on the highway. Less than
>>>> one
>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>> > everything
>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire way.
>>>>> > Fuel
>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>> >
>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>> > misfire.
>>>>> > Plugs are new copper champ's, Throttle body was recently removed and
>>>>> > cleaned. Any ideas where to start looking?
>>>>> >
>>>>> > Also, I'm planning on changing the coolant soon. I have heard I can
>>>>> > get
>>>>> > the prestone heater hose tee, and flush it with a garden hose. Then
>>>> drain
>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>> water.
>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>> > right
>>>>> > mixture?
>>>>> >
>>>>> > Thanks,
>>>>> >
>>>>> > Carl
>>>>> >
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>
see the word SPARK in that definition?
HINT
There's a lot of things that can cause a misfire, and some things that
can cause the PCM to THINK it detects a misfire.
On Sat, 25 Nov 2006 12:09:50 -0800, "Jeff Strickland"
<crwlr@yahoo.com> wrote:
>Yes. What would you deduce from a P0303 code?
>
>HINT
>The code means the #3 plug is not firing properly, which by definition is a
>spark issue.
>
>
>
>
>
>"bllsht" <nospam@dot.net> wrote in message
>news:c48hm2hv5ver6p6golf49qrpbsvnspqbp9@4ax.com.. .
>> So just from the P-code you've already determined it's a spark issue.
>> Wow. You're good.
>>
>>
>> On Sat, 25 Nov 2006 09:15:30 -0800, "Jeff Strickland"
>> <crwlr@yahoo.com> wrote:
>>
>>>Relative to the P-code, ALL he needs to address is the spark issue.
>>>
>>>
>>>
>>>
>>>"Earle Horton" <el_anglo_burgues@usa.com> wrote in message
>>>news:45686645$0$21225$88260bb3@free.teranews.co m...
>>>> Heh, I read this as two separate issues. ;^)
>>>>
>>>> You are right that he needs to address the spark issue too.
>>>>
>>>> Earle
>>>>
>>>> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
>>>> news:OeudnbF-e-vX7fXYnZ2dnUVZ_oadnZ2d@ez2.net...
>>>>> You can drain and refill the coolant all you want -- probably a good
>>>>> thing
>>>>> by the way -- but this will not fix the error code.
>>>>>
>>>>> If I got the code you got, I'd be looking at stuff like spark plug
>>>>> wires
>>>> or
>>>>> the coil (if the motor has a dedicated coil for each plug). I certainly
>>>>> would not spend time and money on completely unrelated systems,
>>>>> especially
>>>>> when those systems have their own series of codes to tell me when they
>>>>> are
>>>>> not feeling well.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> "Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
>>>>> news:G9WdnWxDF-WqDPrYnZ2dnUVZ_tidnZ2d@comcast.com...
>>>>> > Jeep in question is my 2000 XJ. 4.0, Aw4. 95,000 miles
>>>>> >
>>>>> > On the way back from Seattle today, I drove down a washboard road for
>>>>> > about 7 miles, got gas and went to get back on the highway. Less than
>>>> one
>>>>> > mile after fueling, I get a CEL. Pull over, gas cap is tight,
>>>>> > everything
>>>>> > looks OK. Continue around 100 miles home, CEL solid the entire way.
>>>>> > Fuel
>>>>> > near home, 15.5MPG! I had previously gotten 21.1, 18.9, 20.1.
>>>>> >
>>>>> > Stop at CSK, pull the codes, and I get P0303. Cylinder number 3
>>>>> > misfire.
>>>>> > Plugs are new copper champ's, Throttle body was recently removed and
>>>>> > cleaned. Any ideas where to start looking?
>>>>> >
>>>>> > Also, I'm planning on changing the coolant soon. I have heard I can
>>>>> > get
>>>>> > the prestone heater hose tee, and flush it with a garden hose. Then
>>>> drain
>>>>> > the radiator thru the lower hose, fill the radiator with distilled
>>>> water.
>>>>> > Drain again, and refill with 100% coolant. Will this give me the
>>>>> > right
>>>>> > mixture?
>>>>> >
>>>>> > Thanks,
>>>>> >
>>>>> > Carl
>>>>> >
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Posted via a free Usenet account from http://www.teranews.com
>>>>
