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-   -   P0303 and Coolant (https://www.jeepscanada.com/jeep-mailing-list-32/p0303-coolant-42303/)

billy ray 11-25-2006 10:06 AM

Re: P0303 and Coolant
 
DC states a warning in the manual in bold letters that you shouldn't use
wetting solutions..

I used Zerex flush, if your cooling system is really dirty the Zerex cleaner
is stronger.

Two gallons of coolant should leave you a bit to spare.


"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:PcSdne5rTpSchfXYnZ2dnUVZ_rSdnZ2d@comcast.com. ..
> So I'll need two gallons of coolant? Is one radiator flush better than
> another? I have always used 'Water Wetter' with good results. Will 'Water
> Wetter' work with the Zerex G-05?
>
> Thanks,
>
> Carl
>
>
> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
> news:1f770$456796f6$422afc51$6001@FUSE.NET...
>> Try cleaning the plug, you may have a bit of carbon in the nose cone
>> causing an short. It that doesn't 'cure' it replace that plug.
>>
>> Cooling system: I recall your system holds 12 quarts but check your
>> manual.. DC recommends you upgrade to the new spec G-05 coolant although
>> you may continue with the old spec. (see below)
>>
>> Flushing: If there is a layer of slime in the expansion tank or the
>> cooling system has been neglected It might be advisable to chemically
>> flush or clean the cooling system. The flush-n-fill kits make this easy
>> and thorough.
>>
>> I did several flush/drain cycles to be sure the nasty old coolant was
>> gone and then let the hose run several minutes after I was sure it was
>> completely clear.
>>
>> A flushing of the heater core with distilled water would be a good idea,
>> you can clamp the hose to force the distilled water back-down-and out.
>>
>> Add your 6 quarts of Zerex Original Green or Zerex G-05 concentrate to
>> the system and another quart (7th) to the expansion tank and then top
>> off with additional distilled water.
>>
>> That should give you -57/+270 protection.
>>
>> You can use the Tee to 'burp' the system that otherwise would work out
>> over the next several days of driving. In a few days check the expansion
>> tank and re-top as necessary.
>>
>>
>>
>> "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
>>>

>>
>>

>
>




billy ray 11-25-2006 10:06 AM

Re: P0303 and Coolant
 
DC states a warning in the manual in bold letters that you shouldn't use
wetting solutions..

I used Zerex flush, if your cooling system is really dirty the Zerex cleaner
is stronger.

Two gallons of coolant should leave you a bit to spare.


"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:PcSdne5rTpSchfXYnZ2dnUVZ_rSdnZ2d@comcast.com. ..
> So I'll need two gallons of coolant? Is one radiator flush better than
> another? I have always used 'Water Wetter' with good results. Will 'Water
> Wetter' work with the Zerex G-05?
>
> Thanks,
>
> Carl
>
>
> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
> news:1f770$456796f6$422afc51$6001@FUSE.NET...
>> Try cleaning the plug, you may have a bit of carbon in the nose cone
>> causing an short. It that doesn't 'cure' it replace that plug.
>>
>> Cooling system: I recall your system holds 12 quarts but check your
>> manual.. DC recommends you upgrade to the new spec G-05 coolant although
>> you may continue with the old spec. (see below)
>>
>> Flushing: If there is a layer of slime in the expansion tank or the
>> cooling system has been neglected It might be advisable to chemically
>> flush or clean the cooling system. The flush-n-fill kits make this easy
>> and thorough.
>>
>> I did several flush/drain cycles to be sure the nasty old coolant was
>> gone and then let the hose run several minutes after I was sure it was
>> completely clear.
>>
>> A flushing of the heater core with distilled water would be a good idea,
>> you can clamp the hose to force the distilled water back-down-and out.
>>
>> Add your 6 quarts of Zerex Original Green or Zerex G-05 concentrate to
>> the system and another quart (7th) to the expansion tank and then top
>> off with additional distilled water.
>>
>> That should give you -57/+270 protection.
>>
>> You can use the Tee to 'burp' the system that otherwise would work out
>> over the next several days of driving. In a few days check the expansion
>> tank and re-top as necessary.
>>
>>
>>
>> "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
>>>

>>
>>

>
>




billy ray 11-25-2006 10:06 AM

Re: P0303 and Coolant
 
DC states a warning in the manual in bold letters that you shouldn't use
wetting solutions..

I used Zerex flush, if your cooling system is really dirty the Zerex cleaner
is stronger.

Two gallons of coolant should leave you a bit to spare.


"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:PcSdne5rTpSchfXYnZ2dnUVZ_rSdnZ2d@comcast.com. ..
> So I'll need two gallons of coolant? Is one radiator flush better than
> another? I have always used 'Water Wetter' with good results. Will 'Water
> Wetter' work with the Zerex G-05?
>
> Thanks,
>
> Carl
>
>
> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
> news:1f770$456796f6$422afc51$6001@FUSE.NET...
>> Try cleaning the plug, you may have a bit of carbon in the nose cone
>> causing an short. It that doesn't 'cure' it replace that plug.
>>
>> Cooling system: I recall your system holds 12 quarts but check your
>> manual.. DC recommends you upgrade to the new spec G-05 coolant although
>> you may continue with the old spec. (see below)
>>
>> Flushing: If there is a layer of slime in the expansion tank or the
>> cooling system has been neglected It might be advisable to chemically
>> flush or clean the cooling system. The flush-n-fill kits make this easy
>> and thorough.
>>
>> I did several flush/drain cycles to be sure the nasty old coolant was
>> gone and then let the hose run several minutes after I was sure it was
>> completely clear.
>>
>> A flushing of the heater core with distilled water would be a good idea,
>> you can clamp the hose to force the distilled water back-down-and out.
>>
>> Add your 6 quarts of Zerex Original Green or Zerex G-05 concentrate to
>> the system and another quart (7th) to the expansion tank and then top
>> off with additional distilled water.
>>
>> That should give you -57/+270 protection.
>>
>> You can use the Tee to 'burp' the system that otherwise would work out
>> over the next several days of driving. In a few days check the expansion
>> tank and re-top as necessary.
>>
>>
>>
>> "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
>>>

>>
>>

>
>




Earle Horton 11-25-2006 11:28 AM

Re: P0303 and Coolant
 
How exactly do you know that you "have always used 'Water Wetter' with good
results"? Because the car still ran afterwards? I don't think you need it.
Water and ethylene glycol are pretty darn wet already! Billy Ray says so
too, and he's some kind of chemist.

If the coolant presently in the system is pretty clean, and you can get the
drain plug out of the block, then I don't think you need to flush with
anything but water, if at all. Don't forget to rinse the overflow bottle
and the heater core. These are spots often missed.

Earle

"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:PcSdne5rTpSchfXYnZ2dnUVZ_rSdnZ2d@comcast.com. ..
> So I'll need two gallons of coolant? Is one radiator flush better than
> another? I have always used 'Water Wetter' with good results. Will 'Water
> Wetter' work with the Zerex G-05?
>
> Thanks,
>
> Carl
>
>
> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
> news:1f770$456796f6$422afc51$6001@FUSE.NET...
> > Try cleaning the plug, you may have a bit of carbon in the nose cone
> > causing an short. It that doesn't 'cure' it replace that plug.
> >
> > Cooling system: I recall your system holds 12 quarts but check your
> > manual.. DC recommends you upgrade to the new spec G-05 coolant

although
> > you may continue with the old spec. (see below)
> >
> > Flushing: If there is a layer of slime in the expansion tank or the
> > cooling system has been neglected It might be advisable to chemically
> > flush or clean the cooling system. The flush-n-fill kits make this easy
> > and thorough.
> >
> > I did several flush/drain cycles to be sure the nasty old coolant was

gone
> > and then let the hose run several minutes after I was sure it was
> > completely clear.
> >
> > A flushing of the heater core with distilled water would be a good idea,
> > you can clamp the hose to force the distilled water back-down-and out.
> >
> > Add your 6 quarts of Zerex Original Green or Zerex G-05 concentrate to

the
> > system and another quart (7th) to the expansion tank and then top off
> > with additional distilled water.
> >
> > That should give you -57/+270 protection.
> >
> > You can use the Tee to 'burp' the system that otherwise would work out
> > over the next several days of driving. In a few days check the

expansion
> > tank and re-top as necessary.
> >
> >
> >
> > "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


Earle Horton 11-25-2006 11:28 AM

Re: P0303 and Coolant
 
How exactly do you know that you "have always used 'Water Wetter' with good
results"? Because the car still ran afterwards? I don't think you need it.
Water and ethylene glycol are pretty darn wet already! Billy Ray says so
too, and he's some kind of chemist.

If the coolant presently in the system is pretty clean, and you can get the
drain plug out of the block, then I don't think you need to flush with
anything but water, if at all. Don't forget to rinse the overflow bottle
and the heater core. These are spots often missed.

Earle

"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:PcSdne5rTpSchfXYnZ2dnUVZ_rSdnZ2d@comcast.com. ..
> So I'll need two gallons of coolant? Is one radiator flush better than
> another? I have always used 'Water Wetter' with good results. Will 'Water
> Wetter' work with the Zerex G-05?
>
> Thanks,
>
> Carl
>
>
> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
> news:1f770$456796f6$422afc51$6001@FUSE.NET...
> > Try cleaning the plug, you may have a bit of carbon in the nose cone
> > causing an short. It that doesn't 'cure' it replace that plug.
> >
> > Cooling system: I recall your system holds 12 quarts but check your
> > manual.. DC recommends you upgrade to the new spec G-05 coolant

although
> > you may continue with the old spec. (see below)
> >
> > Flushing: If there is a layer of slime in the expansion tank or the
> > cooling system has been neglected It might be advisable to chemically
> > flush or clean the cooling system. The flush-n-fill kits make this easy
> > and thorough.
> >
> > I did several flush/drain cycles to be sure the nasty old coolant was

gone
> > and then let the hose run several minutes after I was sure it was
> > completely clear.
> >
> > A flushing of the heater core with distilled water would be a good idea,
> > you can clamp the hose to force the distilled water back-down-and out.
> >
> > Add your 6 quarts of Zerex Original Green or Zerex G-05 concentrate to

the
> > system and another quart (7th) to the expansion tank and then top off
> > with additional distilled water.
> >
> > That should give you -57/+270 protection.
> >
> > You can use the Tee to 'burp' the system that otherwise would work out
> > over the next several days of driving. In a few days check the

expansion
> > tank and re-top as necessary.
> >
> >
> >
> > "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


Earle Horton 11-25-2006 11:28 AM

Re: P0303 and Coolant
 
How exactly do you know that you "have always used 'Water Wetter' with good
results"? Because the car still ran afterwards? I don't think you need it.
Water and ethylene glycol are pretty darn wet already! Billy Ray says so
too, and he's some kind of chemist.

If the coolant presently in the system is pretty clean, and you can get the
drain plug out of the block, then I don't think you need to flush with
anything but water, if at all. Don't forget to rinse the overflow bottle
and the heater core. These are spots often missed.

Earle

"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:PcSdne5rTpSchfXYnZ2dnUVZ_rSdnZ2d@comcast.com. ..
> So I'll need two gallons of coolant? Is one radiator flush better than
> another? I have always used 'Water Wetter' with good results. Will 'Water
> Wetter' work with the Zerex G-05?
>
> Thanks,
>
> Carl
>
>
> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
> news:1f770$456796f6$422afc51$6001@FUSE.NET...
> > Try cleaning the plug, you may have a bit of carbon in the nose cone
> > causing an short. It that doesn't 'cure' it replace that plug.
> >
> > Cooling system: I recall your system holds 12 quarts but check your
> > manual.. DC recommends you upgrade to the new spec G-05 coolant

although
> > you may continue with the old spec. (see below)
> >
> > Flushing: If there is a layer of slime in the expansion tank or the
> > cooling system has been neglected It might be advisable to chemically
> > flush or clean the cooling system. The flush-n-fill kits make this easy
> > and thorough.
> >
> > I did several flush/drain cycles to be sure the nasty old coolant was

gone
> > and then let the hose run several minutes after I was sure it was
> > completely clear.
> >
> > A flushing of the heater core with distilled water would be a good idea,
> > you can clamp the hose to force the distilled water back-down-and out.
> >
> > Add your 6 quarts of Zerex Original Green or Zerex G-05 concentrate to

the
> > system and another quart (7th) to the expansion tank and then top off
> > with additional distilled water.
> >
> > That should give you -57/+270 protection.
> >
> > You can use the Tee to 'burp' the system that otherwise would work out
> > over the next several days of driving. In a few days check the

expansion
> > tank and re-top as necessary.
> >
> >
> >
> > "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


Jeff Strickland 11-25-2006 11:33 AM

Re: P0303 and Coolant
 
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
>



Jeff Strickland 11-25-2006 11:33 AM

Re: P0303 and Coolant
 
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
>



Jeff Strickland 11-25-2006 11:33 AM

Re: P0303 and Coolant
 
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
>



Earle Horton 11-25-2006 11:59 AM

Re: P0303 and Coolant
 
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
> >

>




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