I got a 91 XJ and I been having problems when I turn left the engine just stalls and while I'm driving occasionally the rpm will drop and then go back up. It will turn right back on after it stalls with no problem. I have replaced fuel filter fuel pump ignition coil crank sensor spark plug wires and plugs distributor. Everything starts and runs fine at idle does anyone else experience this problem before in there Cherokee? Possibly thinking its bad gas?

 

You seem to have suggested that the main problem is with turning left. Is there any belt screeching? Have you checked to make sure the steering pump assembly isn't choking the engine via the pulley system?

I think you should shift your attention to these areas: 1) the pulley system to ensure there isn't any binding or any bad pulleys; 2) the air intake system and its electrical sensors to ensure your engine is getting the proper flow of air and correct readings to mix the right amount of gas ;and 3) the fuel pump to ensure you're getting all the fuel you need.

 

You have something that is driven by the belt, check your belt for unusual wear.

 

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Just throwing something else into the mix, I had a PU truck once that would shut off when I turned it right real PITA. After 2 weeks of looking for the problem a friend came over to have a look we found the problem.


It was a wire in the harness in the steering column that was grounding out when turning right only. It took 2 of us with a multi meter about 2 hrs. to find the problem.

 

I had a problem similar to this on my ZJ. I turn left the engine would die for a split second, hit a bump and it would die, but only for a second. It turned out to be the wiring harness was resting on the exhaust manifold flange at the back of the engine. The plastic clip that were supposed hold the harness broke and let the harness fall.