2004 Jeep Grand Cherokee Limited
Inline 6 Cylinder Engine
Automatic Transmission
Stock - No modifications

Symptoms:
After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
and the car starts shaking rapidly. When you accelerate the car
shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
pressing the accelerator slightly to maintain a steady velocity (which
is about 1500RPM) the car will experience the shake while driving.
Moderate acceleration the problem goes away. Lifting off of the gas
and the problem goes away until the above rpm range is reached and
then problem comes back

Followup:
Computer diagnostics indicates a miss fire on cylinder # 5

Question:
Could this be a clogged injector or are there other suggestions?

TIA Ken

 

fouled spark plug, failed injector, and a failed coil pac ,

ken859@optonline.net wrote:

> 2004 Jeep Grand Cherokee Limited
> Inline 6 Cylinder Engine
> Automatic Transmission
> Stock - No modifications
>
> Symptoms:
> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
> and the car starts shaking rapidly. When you accelerate the car
> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
> pressing the accelerator slightly to maintain a steady velocity (which
> is about 1500RPM) the car will experience the shake while driving.
> Moderate acceleration the problem goes away. Lifting off of the gas
> and the problem goes away until the above rpm range is reached and
> then problem comes back
>
> Followup:
> Computer diagnostics indicates a miss fire on cylinder # 5
>
> Question:
> Could this be a clogged injector or are there other suggestions?
>
> TIA Ken

 

fouled spark plug, failed injector, and a failed coil pac ,

ken859@optonline.net wrote:

> 2004 Jeep Grand Cherokee Limited
> Inline 6 Cylinder Engine
> Automatic Transmission
> Stock - No modifications
>
> Symptoms:
> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
> and the car starts shaking rapidly. When you accelerate the car
> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
> pressing the accelerator slightly to maintain a steady velocity (which
> is about 1500RPM) the car will experience the shake while driving.
> Moderate acceleration the problem goes away. Lifting off of the gas
> and the problem goes away until the above rpm range is reached and
> then problem comes back
>
> Followup:
> Computer diagnostics indicates a miss fire on cylinder # 5
>
> Question:
> Could this be a clogged injector or are there other suggestions?
>
> TIA Ken

 

fouled spark plug, failed injector, and a failed coil pac ,

ken859@optonline.net wrote:

> 2004 Jeep Grand Cherokee Limited
> Inline 6 Cylinder Engine
> Automatic Transmission
> Stock - No modifications
>
> Symptoms:
> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
> and the car starts shaking rapidly. When you accelerate the car
> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
> pressing the accelerator slightly to maintain a steady velocity (which
> is about 1500RPM) the car will experience the shake while driving.
> Moderate acceleration the problem goes away. Lifting off of the gas
> and the problem goes away until the above rpm range is reached and
> then problem comes back
>
> Followup:
> Computer diagnostics indicates a miss fire on cylinder # 5
>
> Question:
> Could this be a clogged injector or are there other suggestions?
>
> TIA Ken

 

fouled spark plug, failed injector, and a failed coil pac ,

ken859@optonline.net wrote:

> 2004 Jeep Grand Cherokee Limited
> Inline 6 Cylinder Engine
> Automatic Transmission
> Stock - No modifications
>
> Symptoms:
> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
> and the car starts shaking rapidly. When you accelerate the car
> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
> pressing the accelerator slightly to maintain a steady velocity (which
> is about 1500RPM) the car will experience the shake while driving.
> Moderate acceleration the problem goes away. Lifting off of the gas
> and the problem goes away until the above rpm range is reached and
> then problem comes back
>
> Followup:
> Computer diagnostics indicates a miss fire on cylinder # 5
>
> Question:
> Could this be a clogged injector or are there other suggestions?
>
> TIA Ken

 

Don't each of the coil packs handle 2 cylinders? Wouldn't both misfire?



--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"tim bur" <dbrider@cac.net> wrote in message
news:43236F02.32C2328F@cac.net...
> fouled spark plug, failed injector, and a failed coil pac ,
>
> ken859@optonline.net wrote:
>
>> 2004 Jeep Grand Cherokee Limited
>> Inline 6 Cylinder Engine
>> Automatic Transmission
>> Stock - No modifications
>>
>> Symptoms:
>> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
>> and the car starts shaking rapidly. When you accelerate the car
>> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
>> pressing the accelerator slightly to maintain a steady velocity (which
>> is about 1500RPM) the car will experience the shake while driving.
>> Moderate acceleration the problem goes away. Lifting off of the gas
>> and the problem goes away until the above rpm range is reached and
>> then problem comes back
>>
>> Followup:
>> Computer diagnostics indicates a miss fire on cylinder # 5
>>
>> Question:
>> Could this be a clogged injector or are there other suggestions?
>>
>> TIA Ken
>

 

Don't each of the coil packs handle 2 cylinders? Wouldn't both misfire?



--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"tim bur" <dbrider@cac.net> wrote in message
news:43236F02.32C2328F@cac.net...
> fouled spark plug, failed injector, and a failed coil pac ,
>
> ken859@optonline.net wrote:
>
>> 2004 Jeep Grand Cherokee Limited
>> Inline 6 Cylinder Engine
>> Automatic Transmission
>> Stock - No modifications
>>
>> Symptoms:
>> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
>> and the car starts shaking rapidly. When you accelerate the car
>> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
>> pressing the accelerator slightly to maintain a steady velocity (which
>> is about 1500RPM) the car will experience the shake while driving.
>> Moderate acceleration the problem goes away. Lifting off of the gas
>> and the problem goes away until the above rpm range is reached and
>> then problem comes back
>>
>> Followup:
>> Computer diagnostics indicates a miss fire on cylinder # 5
>>
>> Question:
>> Could this be a clogged injector or are there other suggestions?
>>
>> TIA Ken
>

 

Don't each of the coil packs handle 2 cylinders? Wouldn't both misfire?



--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"tim bur" <dbrider@cac.net> wrote in message
news:43236F02.32C2328F@cac.net...
> fouled spark plug, failed injector, and a failed coil pac ,
>
> ken859@optonline.net wrote:
>
>> 2004 Jeep Grand Cherokee Limited
>> Inline 6 Cylinder Engine
>> Automatic Transmission
>> Stock - No modifications
>>
>> Symptoms:
>> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
>> and the car starts shaking rapidly. When you accelerate the car
>> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
>> pressing the accelerator slightly to maintain a steady velocity (which
>> is about 1500RPM) the car will experience the shake while driving.
>> Moderate acceleration the problem goes away. Lifting off of the gas
>> and the problem goes away until the above rpm range is reached and
>> then problem comes back
>>
>> Followup:
>> Computer diagnostics indicates a miss fire on cylinder # 5
>>
>> Question:
>> Could this be a clogged injector or are there other suggestions?
>>
>> TIA Ken
>

 

Don't each of the coil packs handle 2 cylinders? Wouldn't both misfire?



--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"tim bur" <dbrider@cac.net> wrote in message
news:43236F02.32C2328F@cac.net...
> fouled spark plug, failed injector, and a failed coil pac ,
>
> ken859@optonline.net wrote:
>
>> 2004 Jeep Grand Cherokee Limited
>> Inline 6 Cylinder Engine
>> Automatic Transmission
>> Stock - No modifications
>>
>> Symptoms:
>> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
>> and the car starts shaking rapidly. When you accelerate the car
>> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
>> pressing the accelerator slightly to maintain a steady velocity (which
>> is about 1500RPM) the car will experience the shake while driving.
>> Moderate acceleration the problem goes away. Lifting off of the gas
>> and the problem goes away until the above rpm range is reached and
>> then problem comes back
>>
>> Followup:
>> Computer diagnostics indicates a miss fire on cylinder # 5
>>
>> Question:
>> Could this be a clogged injector or are there other suggestions?
>>
>> TIA Ken
>

 

not on that coil pac

Billy Ray wrote:

> Don't each of the coil packs handle 2 cylinders? Wouldn't both misfire?
>
> --
> .
> Billy_Ray@SPAM.fuse.net (remove SPAM)
> 2002 Jeep WJ 4 Liter Automatic
> Brilliant Black Crystal Pearl Coat
> Sharing is why we are all here....... or should be.
> .
> "tim bur" <dbrider@cac.net> wrote in message
> news:43236F02.32C2328F@cac.net...
> > fouled spark plug, failed injector, and a failed coil pac ,
> >
> > ken859@optonline.net wrote:
> >
> >> 2004 Jeep Grand Cherokee Limited
> >> Inline 6 Cylinder Engine
> >> Automatic Transmission
> >> Stock - No modifications
> >>
> >> Symptoms:
> >> After car warms up (3-5 Minutes) the engine idle drops to about 600RPM
> >> and the car starts shaking rapidly. When you accelerate the car
> >> shakes repeatedly between 600RPM and 1500RPM. At 50 miles an hour,
> >> pressing the accelerator slightly to maintain a steady velocity (which
> >> is about 1500RPM) the car will experience the shake while driving.
> >> Moderate acceleration the problem goes away. Lifting off of the gas
> >> and the problem goes away until the above rpm range is reached and
> >> then problem comes back
> >>
> >> Followup:
> >> Computer diagnostics indicates a miss fire on cylinder # 5
> >>
> >> Question:
> >> Could this be a clogged injector or are there other suggestions?
> >>
> >> TIA Ken
> >