Re: correct idle rate for '94 Jeep Grand Cherokee?
 

elvishasrisen did pass the time by typing:
> Hi All,
> Can anyone tell me what the correct idle rate is for a '94 Jeep
> Grand Cherokee? Mine seems to be idling at around 1100 rpms ..is this
> too high? Thanks in advance!

600rpm is "normal" but that depends on if the AC is running and if you
have the I6, V8 is probably around 800.

There is no way to set the idle rate manually, no screws to twiddle with
or knobs to turn. High idle indicates a vac leak. Likely culprit is the
line running to the CCV (back of the valve cover to the intake rail), but
any of the soft parts can get old and split. A bit of TB cleaner sprayed
on them will let you know by making the engine stammer.

Also clean the throttle body, the idle control motor is probably gummy.
http://revbeergoggles.com/tb/tb.html


--
DougW

Re: correct idle rate for '94 Jeep Grand Cherokee?
 

elvishasrisen did pass the time by typing:
> Hi All,
> Can anyone tell me what the correct idle rate is for a '94 Jeep
> Grand Cherokee? Mine seems to be idling at around 1100 rpms ..is this
> too high? Thanks in advance!

600rpm is "normal" but that depends on if the AC is running and if you
have the I6, V8 is probably around 800.

There is no way to set the idle rate manually, no screws to twiddle with
or knobs to turn. High idle indicates a vac leak. Likely culprit is the
line running to the CCV (back of the valve cover to the intake rail), but
any of the soft parts can get old and split. A bit of TB cleaner sprayed
on them will let you know by making the engine stammer.

Also clean the throttle body, the idle control motor is probably gummy.
http://revbeergoggles.com/tb/tb.html


--
DougW

Re: correct idle rate for '94 Jeep Grand Cherokee?
 

elvishasrisen did pass the time by typing:
> Hi All,
> Can anyone tell me what the correct idle rate is for a '94 Jeep
> Grand Cherokee? Mine seems to be idling at around 1100 rpms ..is this
> too high? Thanks in advance!

600rpm is "normal" but that depends on if the AC is running and if you
have the I6, V8 is probably around 800.

There is no way to set the idle rate manually, no screws to twiddle with
or knobs to turn. High idle indicates a vac leak. Likely culprit is the
line running to the CCV (back of the valve cover to the intake rail), but
any of the soft parts can get old and split. A bit of TB cleaner sprayed
on them will let you know by making the engine stammer.

Also clean the throttle body, the idle control motor is probably gummy.
http://revbeergoggles.com/tb/tb.html


--
DougW