Having problems with your 1993 Jeep Wrangler ?

I have a 93 Jeep Wrangler 4.0 that cranks and doesn't wanna start. Fuel Pump is working and has good fuel pressure. Problem is coil loses power after the first start. I put in new distributor, new coil, new crank sensor, new PCM, cleaned all grounds on body & block, chased alot of wires, checked fuse block, relays are operating correctly. When car is ice cold & undisturbed, it will crank over and start immediately and run beautifully. you can run it for 3 secs, 3 mins, or 3 hrs....as soon as you

Posted / edited by AnonymousUser on : 25-09-2017

Answers :

Ok...you mentioned that there is no spark coming from the coil when it's in no start...Is there power from the alternator going to the coil?
One other item...If the timing chain is worn and stretched, it is possible that the cam sensor and crank sensor are out of phase with each other, just enough where a temperature difference will change starting ability.
One question...while in no start, have you tried changing the throttle position while cranking to see if it lights at part or 3/4 throttle?
Repair Help & Product Troubleshooting for 1993 Jeep Wrangler

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