When hot engine begins running rough and dies. Will restart but runs very roughas if missing. Pop the hood and wait 15-20 minutes and will restart and run fine. Have replaced frt O2 sensor

Asked by Apr 02, 2012 at 08:57 PM about the 1999 Jeep Cherokee 4 Dr Sport 4WD

Question type: Maintenance & Repair

5 Answers

12,295

In my opinion, this sounds like a good candidate to be put on an engine monitor. It could be so many things.

355

Its called vapor lock, you might need a fuel pump.

12,295

That's definitely one possibility

1 out of 1 people think this is helpful.
215

I would guess temp sensor or crank position sensor. Sometimes they will start giving improper readings without tripping the check engine light. You might also try disconnecting the computer and checking the timing

1 out of 1 people think this is helpful.

bksoend.........can you tell me what you ever figured out? my 2001 Grand Cherokee is doing the EXACT same thing. I,ve tried everything except a new PCM. i recon thats next. just hoping you got yours fixed

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