Has run fine for some time, well serviced etc. When problem came on car was being driven fine when suddenly car simply slowed down, engine still running but only on idle. When first looked at you could start engine fine and the first press of the throttle pedal would rev the engine up ok, but subsequent presses of the pedal did nothing. Now that 'single' rev up has gone as well. So starts and idles fine, will not rev. Fault code first showed throtlle potentiometer fault, replaced with spare (second hand), no change. Also no fault code now logged. Any ideas anyone??
If it was a fuel shortage the engine would rev but to limited speed. This is a lack of air to throttle body. Check for clogged air filter and all the piping and the throttle body.
SOURCE: rough idle stalls at low rpm's
check your transmission fluid,the motor will stall when fluid is low
SOURCE: 2001 Jeep Cherokee Sport - check engine
warped heads will cause this...if it over heated badly thats going to be the problem
SOURCE: 1996 Jeep Grand Cherokee - Will Not Start or Run
ok it has nothing to do with the gear box
no ower to your injectors check engine fuse
if and wen u took the gear box out did take the positive lead off?
if u did unplug the computer or try the reset so the computer can no the car is back togeather
SOURCE: 2001Jeep Grand Cherokee 4.0l Idle at start up
Check the 'idle air control valve' which is mounted on the throttle body. It sounds like it is not functioning properly, it's about a $75 part.
SOURCE: I have a 1997 Jeep Grand Cherokee 2.5 diesel.
Soungs like egr valve is stuck open. Take it off and look inside small hole on the bottom. The pintle inside should be all the way closed. If not then replace the egr.
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