Car Tech forum: 96 jeep grand cherokee stalls on idle!!! cheech007

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.

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.