Jeep GC vibrates when idle
 

Alright,
No mechanic am I (but I'd like to learn)...
I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
128K miles on it.

It drives just fine, but if I idle, in Drive,with my foot on the
brake, the whole jeep (and everyone inside)vibrates. If I have it in
Park it doesn't vibrate, only when in Drive and stopped. It doesn't
vibrate when I accelerate either.

Any ideas what could cause the vibration? I haven't checked anything
yet....because I don't know what to check.
I was thinking the engine mount but wouldn't that cause a vibration at
times other than when I described?

Thanks for any help.

Re: Jeep GC vibrates when idle
 

Mash wrote:
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?

There are several things that can cause stumble under load at idle.

Low battery is the fist thing.

Next is clean the throttle body and check the motor mounts.

http://revbeergoggles.com/tb/tb.html
http://revbeergoggles.com/motormount/

The ignition system (plugs, wires, rotor, cap) is next
One thing to be on the lookout for is a full up engine quit
under low speed braking or sitting at a stop sign. This
can be the CPS sensor failing. But for now, check those two
things.

--
DougW

Re: Jeep GC vibrates when idle
 

Mash wrote:
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?

There are several things that can cause stumble under load at idle.

Low battery is the fist thing.

Next is clean the throttle body and check the motor mounts.

http://revbeergoggles.com/tb/tb.html
http://revbeergoggles.com/motormount/

The ignition system (plugs, wires, rotor, cap) is next
One thing to be on the lookout for is a full up engine quit
under low speed braking or sitting at a stop sign. This
can be the CPS sensor failing. But for now, check those two
things.

--
DougW

Re: Jeep GC vibrates when idle
 

Mash wrote:
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?

There are several things that can cause stumble under load at idle.

Low battery is the fist thing.

Next is clean the throttle body and check the motor mounts.

http://revbeergoggles.com/tb/tb.html
http://revbeergoggles.com/motormount/

The ignition system (plugs, wires, rotor, cap) is next
One thing to be on the lookout for is a full up engine quit
under low speed braking or sitting at a stop sign. This
can be the CPS sensor failing. But for now, check those two
things.

--
DougW

Re: Jeep GC vibrates when idle
 

Mash wrote:
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?

There are several things that can cause stumble under load at idle.

Low battery is the fist thing.

Next is clean the throttle body and check the motor mounts.

http://revbeergoggles.com/tb/tb.html
http://revbeergoggles.com/motormount/

The ignition system (plugs, wires, rotor, cap) is next
One thing to be on the lookout for is a full up engine quit
under low speed braking or sitting at a stop sign. This
can be the CPS sensor failing. But for now, check those two
things.

--
DougW

Re: Jeep GC vibrates when idle
 

On Sep 18, 7:10 pm, Mash <mashma...@hotmail.com> wrote:
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?
>
> Thanks for any help.

Engine mount IMHO.

Re: Jeep GC vibrates when idle
 

On Sep 18, 7:10 pm, Mash <mashma...@hotmail.com> wrote:
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?
>
> Thanks for any help.

Engine mount IMHO.

Re: Jeep GC vibrates when idle
 

On Sep 18, 7:10 pm, Mash <mashma...@hotmail.com> wrote:
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?
>
> Thanks for any help.

Engine mount IMHO.

Re: Jeep GC vibrates when idle
 

On Sep 18, 7:10 pm, Mash <mashma...@hotmail.com> wrote:
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?
>
> Thanks for any help.

Engine mount IMHO.

Re: Jeep GC vibrates when idle
 

Some in those years had a problem with the automatic's torque converter
lock up, not releasing.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/


"Mash" <mashman74@hotmail.com> wrote in message
news:1190167832.927790.55700@22g2000hsm.googlegrou ps.com...
> Alright,
> No mechanic am I (but I'd like to learn)...
> I've got a 95 Jeep Grand Cherokee, 4.0L 6 cylinder engine, with about
> 128K miles on it.
>
> It drives just fine, but if I idle, in Drive,with my foot on the
> brake, the whole jeep (and everyone inside)vibrates. If I have it in
> Park it doesn't vibrate, only when in Drive and stopped. It doesn't
> vibrate when I accelerate either.
>
> Any ideas what could cause the vibration? I haven't checked anything
> yet....because I don't know what to check.
> I was thinking the engine mount but wouldn't that cause a vibration at
> times other than when I described?
>
> Thanks for any help.
>



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