Thank you for being a valued part of the CNET community. As of December 1, 2020, the forums are in read-only format. In early 2021, CNET Forums will no longer be available. We are grateful for the participation and advice you have provided to one another over the years.

Thanks,

CNET Support

General discussion

96 jeep grand cherokee stalls on idle!!! cheech007

Mar 17, 2008 4:32PM PDT

I hope damian007 can help me with my problem.Two weeks ago my jeep began to idle roughly and within 3 days it began stalling on idle and at stop lights. Took it to mechanic who found injector#2 was blocked so replaced injectors still ran rough.Mechanic then did compression test and found compression good on all 6cyls.Upon further tests mechanic tells me that #2 cylinder does not work which explains the rich petrol smell on idle...since then he cannot find why there is no spark,,he replaced all sparkplugs which were all changed 3months ago on service anyway but still have problem. Checked the leads dont know what else it could be he thinks it might be a map sensor and said he will try 2moro..i also advised him of the idle control valve he cleaned this up but still have problem can you pls give me some advice to give him thanx

Discussion is locked

- Collapse -
Replace distributor cap? Could be cracked.
Mar 17, 2008 4:59PM PDT

It still could be bad plug or wire on that cylinder replace them again. Even new ones can be lemons. See if the plug gap is set to specification. I'm wondering about that mechanic of yours, hmmmmm.

Maintenance ???? Use fuel injector cleaner every six-eight months. Most gas stations carry it for about $3.00 (US). Just add a bottle when you fill up the tank. When was the last time you had it tuned up and the filters replaced? Do this annually in the Fall before Winter if in a cold climate, in Spring in hot.

If these fail find a new mechanic or find a "precision tune".

This thread untracked.

- Collapse -
96 jeep grand cherokee stalls on idle!!!
Mar 17, 2008 5:23PM PDT

Jeep was tuned and major service performed in the first week of jan 08..vehicle drives ok only runs rough and stalls on idle..i will check distributor cap for cracks but im sure my mechanic has checked,just like to add that no error codes have come up. Also car has been very reliable for the last 8yrs and has done 165000 klms without a problem!!

- Collapse -
check the Catalytic converter
Mar 22, 2008 11:29PM PDT

I have the same vehicle, same year and everything, I have had mine since 96 with 278,000 miles and still running. I ran into this same problem at around 150,000 miles. I did all the trouble shooting that you did, then i took it to Midas for a diagnostic. It was the catalytic converter, once I replaced that, I haven't had any problems since. It was a little pricey, around $600, but that might just be I paid too much at a franchise garage. I just wanted my truck to work again.

- Collapse -
catalytic converter
Apr 7, 2008 4:25AM PDT

There was a recall on 96,97, & 98 jeep cherokee, grand cherokee and wranglers to replace/reprogram the pcm and possibly catalytic converter replacement as well. It is emissions recall e22.