Jeep Grand Cherokee check engine light
#11
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
Geez, there's a thousand things it could before replacing the head
would be one: http://www.wjjeeps.com/faultcodes.htm Unless you
misunderstood them, than I'd run like heck away from that Stealership!
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
Firebird wrote:
>
> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
> the code being displayed is P0301, which is misfire in cylinder 1. I finally
> brought it to the Jeep dealer, they could not find any issues with the
> plugs, wires etc..
> So, they reprogrammed the computer, and told me if the lite comes on again
> then the cylinder head would require removal and possible replacement would
> be required...
>
> The car runs fine...except for the dumb light. DOes anyone experience this
> same issue also.
> Thanks
would be one: http://www.wjjeeps.com/faultcodes.htm Unless you
misunderstood them, than I'd run like heck away from that Stealership!
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
Firebird wrote:
>
> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
> the code being displayed is P0301, which is misfire in cylinder 1. I finally
> brought it to the Jeep dealer, they could not find any issues with the
> plugs, wires etc..
> So, they reprogrammed the computer, and told me if the lite comes on again
> then the cylinder head would require removal and possible replacement would
> be required...
>
> The car runs fine...except for the dumb light. DOes anyone experience this
> same issue also.
> Thanks
#12
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
Geez, there's a thousand things it could before replacing the head
would be one: http://www.wjjeeps.com/faultcodes.htm Unless you
misunderstood them, than I'd run like heck away from that Stealership!
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
Firebird wrote:
>
> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
> the code being displayed is P0301, which is misfire in cylinder 1. I finally
> brought it to the Jeep dealer, they could not find any issues with the
> plugs, wires etc..
> So, they reprogrammed the computer, and told me if the lite comes on again
> then the cylinder head would require removal and possible replacement would
> be required...
>
> The car runs fine...except for the dumb light. DOes anyone experience this
> same issue also.
> Thanks
would be one: http://www.wjjeeps.com/faultcodes.htm Unless you
misunderstood them, than I'd run like heck away from that Stealership!
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
Firebird wrote:
>
> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
> the code being displayed is P0301, which is misfire in cylinder 1. I finally
> brought it to the Jeep dealer, they could not find any issues with the
> plugs, wires etc..
> So, they reprogrammed the computer, and told me if the lite comes on again
> then the cylinder head would require removal and possible replacement would
> be required...
>
> The car runs fine...except for the dumb light. DOes anyone experience this
> same issue also.
> Thanks
#13
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
Geez, there's a thousand things it could before replacing the head
would be one: http://www.wjjeeps.com/faultcodes.htm Unless you
misunderstood them, than I'd run like heck away from that Stealership!
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
Firebird wrote:
>
> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
> the code being displayed is P0301, which is misfire in cylinder 1. I finally
> brought it to the Jeep dealer, they could not find any issues with the
> plugs, wires etc..
> So, they reprogrammed the computer, and told me if the lite comes on again
> then the cylinder head would require removal and possible replacement would
> be required...
>
> The car runs fine...except for the dumb light. DOes anyone experience this
> same issue also.
> Thanks
would be one: http://www.wjjeeps.com/faultcodes.htm Unless you
misunderstood them, than I'd run like heck away from that Stealership!
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
Firebird wrote:
>
> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
> the code being displayed is P0301, which is misfire in cylinder 1. I finally
> brought it to the Jeep dealer, they could not find any issues with the
> plugs, wires etc..
> So, they reprogrammed the computer, and told me if the lite comes on again
> then the cylinder head would require removal and possible replacement would
> be required...
>
> The car runs fine...except for the dumb light. DOes anyone experience this
> same issue also.
> Thanks
#14
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
Is it a I-6 or the V-8?
The '01s have no distributor cap or wires. They do have coil packs (I-6) or
coil on wire (V-8)
On an I-6 a coil problem would show up on cylinders 1 & 6 as that same coil
pack fires both.
A close examination of the sparkplug may reveal if a plug is oil fouled,
contaminated by coolant, or damaged. If the misfire occurs only
occasionally (but enough to set off the code) it may appear 'normal'
If the plugs are more than a year old go ahead and change them all, if less
you might try just one plug in cylinder #1
I personally prefer the Bosch Platinum plugs but if you have a preference
for copper then I would suggest Bosch Supers.
"DougW" <post.replies@invalid.address> wrote in message
news:51V1g.19591$IZ2.489@dukeread07...
> Mike Romain did pass the time by typing:
>> I think I would be first looking at the distributor cap under a strong
>> light for a small white spider web looking mark around the post for that
>> cylinder.
>
> <snippies>
>
> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>
> I'd take a look at the plug first.
>
>> Firebird wrote:
>>>
>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>>> and
>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>> finally
>>> brought it to the Jeep dealer, they could not find any issues with the
>>> plugs, wires etc..
>
> --
> DougW
>
>
The '01s have no distributor cap or wires. They do have coil packs (I-6) or
coil on wire (V-8)
On an I-6 a coil problem would show up on cylinders 1 & 6 as that same coil
pack fires both.
A close examination of the sparkplug may reveal if a plug is oil fouled,
contaminated by coolant, or damaged. If the misfire occurs only
occasionally (but enough to set off the code) it may appear 'normal'
If the plugs are more than a year old go ahead and change them all, if less
you might try just one plug in cylinder #1
I personally prefer the Bosch Platinum plugs but if you have a preference
for copper then I would suggest Bosch Supers.
"DougW" <post.replies@invalid.address> wrote in message
news:51V1g.19591$IZ2.489@dukeread07...
> Mike Romain did pass the time by typing:
>> I think I would be first looking at the distributor cap under a strong
>> light for a small white spider web looking mark around the post for that
>> cylinder.
>
> <snippies>
>
> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>
> I'd take a look at the plug first.
>
>> Firebird wrote:
>>>
>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>>> and
>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>> finally
>>> brought it to the Jeep dealer, they could not find any issues with the
>>> plugs, wires etc..
>
> --
> DougW
>
>
#15
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
Is it a I-6 or the V-8?
The '01s have no distributor cap or wires. They do have coil packs (I-6) or
coil on wire (V-8)
On an I-6 a coil problem would show up on cylinders 1 & 6 as that same coil
pack fires both.
A close examination of the sparkplug may reveal if a plug is oil fouled,
contaminated by coolant, or damaged. If the misfire occurs only
occasionally (but enough to set off the code) it may appear 'normal'
If the plugs are more than a year old go ahead and change them all, if less
you might try just one plug in cylinder #1
I personally prefer the Bosch Platinum plugs but if you have a preference
for copper then I would suggest Bosch Supers.
"DougW" <post.replies@invalid.address> wrote in message
news:51V1g.19591$IZ2.489@dukeread07...
> Mike Romain did pass the time by typing:
>> I think I would be first looking at the distributor cap under a strong
>> light for a small white spider web looking mark around the post for that
>> cylinder.
>
> <snippies>
>
> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>
> I'd take a look at the plug first.
>
>> Firebird wrote:
>>>
>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>>> and
>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>> finally
>>> brought it to the Jeep dealer, they could not find any issues with the
>>> plugs, wires etc..
>
> --
> DougW
>
>
The '01s have no distributor cap or wires. They do have coil packs (I-6) or
coil on wire (V-8)
On an I-6 a coil problem would show up on cylinders 1 & 6 as that same coil
pack fires both.
A close examination of the sparkplug may reveal if a plug is oil fouled,
contaminated by coolant, or damaged. If the misfire occurs only
occasionally (but enough to set off the code) it may appear 'normal'
If the plugs are more than a year old go ahead and change them all, if less
you might try just one plug in cylinder #1
I personally prefer the Bosch Platinum plugs but if you have a preference
for copper then I would suggest Bosch Supers.
"DougW" <post.replies@invalid.address> wrote in message
news:51V1g.19591$IZ2.489@dukeread07...
> Mike Romain did pass the time by typing:
>> I think I would be first looking at the distributor cap under a strong
>> light for a small white spider web looking mark around the post for that
>> cylinder.
>
> <snippies>
>
> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>
> I'd take a look at the plug first.
>
>> Firebird wrote:
>>>
>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>>> and
>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>> finally
>>> brought it to the Jeep dealer, they could not find any issues with the
>>> plugs, wires etc..
>
> --
> DougW
>
>
#16
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
Is it a I-6 or the V-8?
The '01s have no distributor cap or wires. They do have coil packs (I-6) or
coil on wire (V-8)
On an I-6 a coil problem would show up on cylinders 1 & 6 as that same coil
pack fires both.
A close examination of the sparkplug may reveal if a plug is oil fouled,
contaminated by coolant, or damaged. If the misfire occurs only
occasionally (but enough to set off the code) it may appear 'normal'
If the plugs are more than a year old go ahead and change them all, if less
you might try just one plug in cylinder #1
I personally prefer the Bosch Platinum plugs but if you have a preference
for copper then I would suggest Bosch Supers.
"DougW" <post.replies@invalid.address> wrote in message
news:51V1g.19591$IZ2.489@dukeread07...
> Mike Romain did pass the time by typing:
>> I think I would be first looking at the distributor cap under a strong
>> light for a small white spider web looking mark around the post for that
>> cylinder.
>
> <snippies>
>
> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>
> I'd take a look at the plug first.
>
>> Firebird wrote:
>>>
>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>>> and
>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>> finally
>>> brought it to the Jeep dealer, they could not find any issues with the
>>> plugs, wires etc..
>
> --
> DougW
>
>
The '01s have no distributor cap or wires. They do have coil packs (I-6) or
coil on wire (V-8)
On an I-6 a coil problem would show up on cylinders 1 & 6 as that same coil
pack fires both.
A close examination of the sparkplug may reveal if a plug is oil fouled,
contaminated by coolant, or damaged. If the misfire occurs only
occasionally (but enough to set off the code) it may appear 'normal'
If the plugs are more than a year old go ahead and change them all, if less
you might try just one plug in cylinder #1
I personally prefer the Bosch Platinum plugs but if you have a preference
for copper then I would suggest Bosch Supers.
"DougW" <post.replies@invalid.address> wrote in message
news:51V1g.19591$IZ2.489@dukeread07...
> Mike Romain did pass the time by typing:
>> I think I would be first looking at the distributor cap under a strong
>> light for a small white spider web looking mark around the post for that
>> cylinder.
>
> <snippies>
>
> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>
> I'd take a look at the plug first.
>
>> Firebird wrote:
>>>
>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>>> and
>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>> finally
>>> brought it to the Jeep dealer, they could not find any issues with the
>>> plugs, wires etc..
>
> --
> DougW
>
>
#17
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
In article <1mU1g.24184$nA3.1460@news-wrt-01.rdc-nyc.rr.com>,
Firebird <erodman@nyc.rr.com> wrote:
#I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
#the code being displayed is P0301, which is misfire in cylinder 1. I finally
#brought it to the Jeep dealer, they could not find any issues with the
#plugs, wires etc..
What engine do you have? The i6, the v8, or the High Output v8?
/herb
Firebird <erodman@nyc.rr.com> wrote:
#I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
#the code being displayed is P0301, which is misfire in cylinder 1. I finally
#brought it to the Jeep dealer, they could not find any issues with the
#plugs, wires etc..
What engine do you have? The i6, the v8, or the High Output v8?
/herb
#18
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
In article <1mU1g.24184$nA3.1460@news-wrt-01.rdc-nyc.rr.com>,
Firebird <erodman@nyc.rr.com> wrote:
#I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
#the code being displayed is P0301, which is misfire in cylinder 1. I finally
#brought it to the Jeep dealer, they could not find any issues with the
#plugs, wires etc..
What engine do you have? The i6, the v8, or the High Output v8?
/herb
Firebird <erodman@nyc.rr.com> wrote:
#I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
#the code being displayed is P0301, which is misfire in cylinder 1. I finally
#brought it to the Jeep dealer, they could not find any issues with the
#plugs, wires etc..
What engine do you have? The i6, the v8, or the High Output v8?
/herb
#19
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
In article <1mU1g.24184$nA3.1460@news-wrt-01.rdc-nyc.rr.com>,
Firebird <erodman@nyc.rr.com> wrote:
#I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
#the code being displayed is P0301, which is misfire in cylinder 1. I finally
#brought it to the Jeep dealer, they could not find any issues with the
#plugs, wires etc..
What engine do you have? The i6, the v8, or the High Output v8?
/herb
Firebird <erodman@nyc.rr.com> wrote:
#I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on and
#the code being displayed is P0301, which is misfire in cylinder 1. I finally
#brought it to the Jeep dealer, they could not find any issues with the
#plugs, wires etc..
What engine do you have? The i6, the v8, or the High Output v8?
/herb
#20
Guest
Posts: n/a
Re: Jeep Grand Cherokee check engine light
I brought it to the dealer, there was no problem with a plug or wire.
The engine runs smoothly, there is no missing.
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:4448181E.E59C1E66@sympatico.ca...
>I think I would be first looking at the distributor cap under a strong
> light for a small white spider web looking mark around the post for that
> cylinder.
>
> I next would take an ohm meter and check the plug wire. I would compare
> it to the ohms for #2 or #6 depending on the engine. I believe one of
> those wires are the same length as #1, so they should read the 'same'.
> It is measured in "X" ohms per foot, so a 2' wire measures double the
> "X" of a 1' wire.
>
> I next would spend 2 or 3 bucks and change the damn spark plug, then
> pull the battery cables to reset the computer. When I did that, I would
> pull another plug to see if #1 looks fouled or really clean in
> comparison. (electric misfire vs coolant/compression leak)
>
> 'Then' if all else failed I would get a ten dollar compression tester
> and check the compression to compare all to #1.
>
> Then I might change the head gasket....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Firebird wrote:
>>
>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>> and
>> the code being displayed is P0301, which is misfire in cylinder 1. I
>> finally
>> brought it to the Jeep dealer, they could not find any issues with the
>> plugs, wires etc..
>> So, they reprogrammed the computer, and told me if the lite comes on
>> again
>> then the cylinder head would require removal and possible replacement
>> would
>> be required...
>>
>> The car runs fine...except for the dumb light. DOes anyone experience
>> this
>> same issue also.
>> Thanks
The engine runs smoothly, there is no missing.
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:4448181E.E59C1E66@sympatico.ca...
>I think I would be first looking at the distributor cap under a strong
> light for a small white spider web looking mark around the post for that
> cylinder.
>
> I next would take an ohm meter and check the plug wire. I would compare
> it to the ohms for #2 or #6 depending on the engine. I believe one of
> those wires are the same length as #1, so they should read the 'same'.
> It is measured in "X" ohms per foot, so a 2' wire measures double the
> "X" of a 1' wire.
>
> I next would spend 2 or 3 bucks and change the damn spark plug, then
> pull the battery cables to reset the computer. When I did that, I would
> pull another plug to see if #1 looks fouled or really clean in
> comparison. (electric misfire vs coolant/compression leak)
>
> 'Then' if all else failed I would get a ten dollar compression tester
> and check the compression to compare all to #1.
>
> Then I might change the head gasket....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Firebird wrote:
>>
>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>> and
>> the code being displayed is P0301, which is misfire in cylinder 1. I
>> finally
>> brought it to the Jeep dealer, they could not find any issues with the
>> plugs, wires etc..
>> So, they reprogrammed the computer, and told me if the lite comes on
>> again
>> then the cylinder head would require removal and possible replacement
>> would
>> be required...
>>
>> The car runs fine...except for the dumb light. DOes anyone experience
>> this
>> same issue also.
>> Thanks