Today at school I got in my jeep, (93' cherokee sport, I6, 5 speed manual) turned the key and the engine turned over but didn't start. After trying a little more I got it started and seemed fine. So I drove it off the school property and was turning onto the main road ruuning through our town. When I did so it almost stalled but managed to save it. I went on a little more and as I was driving and the thing just died on me while driving. (3rd gear about 2200rpms) When that happened the motor went out along with the power steering but all electronics stayed on. I luckily managed to roll safely into a car wash where I parked by the vacums. There it did the exact same thing as it did at school, turned over but wouldn't start. My friend managed to get it started again. When he did, he was giving it some gas in neutral and it backfired and died again. I got back in tried a few more times unsuccesfully, I eventually got I started and took it to the nearest mechanic where it sits now. That time it seemed to run fine.

Not quite sure what the problem is. I drove it this morning and it behaved just fine. It's completly random when it does start. If any more info is needed, please say something.

 

Sounds like CPS. Check/replace the CPS. Costs about $35 and half an hour or so to swap.

 

What engine you have? Check and see where the wire to the CPS is run (CPS is mounted on the trans tunnel) If your CPS wire is close to a source of heat (such as the exhaust manifold in my case) Then it'll go in and out randomly as it heats and cools. If its near a source of heat try rerouting it a little out of the way.

 

4.0 inline 6

 

Check where the CPS wire goes, I've seen a one 4.0 and quite a few 2.5's with the CPS just ran in the absolutely worst place.. clipped on the side of the exhaust manifold.

 

Sounds like cps