I have a 1993 Cherokee that just shut off on me one day while driving. I towed it home and have been working on it randomly with each new search for a solution. Before anyone says it...I have indeed searched for an answer with the amazing search feature on the forum.

My Cherokee will crank but will not spark. I have perfect fuel pressure all the way down the system. I have replaced the CPS and it still did not spark. I then replaced the ignition coil. It did not spark then either. I have had a back fire once or twice with a resulting small flame popping out the intake manifold. I have tried cranking with the fuel shut off (foot to the floor on the gas pedal) in case I had just flooded it. Still nothing. There is a strong aroma of fuel but that gives me no comfort since there is no spark.

Before I replace the PCM, I was curious if anybody had any other remedies for fixing my POS crawler.

 

Can you elaborate on "no spark"? If it's backfiring, there must be spark, at least sometimes.

 

Believe me it makes no sense in person either. I pulled the distributor wire off of the coil, put a screwdriver (with a plastic handle) up next to the tip, and my brother cranked the engine. No spark.

 

Leave the wire in the coil. Take the distributor end, and hold it about 1/8" from a ground (engine block, etc). Crank engine. Spark?

 

I know you said you replaced your CPS. But where did you buy it from. I know that anything other then OEM are hit and miss and many are bad out of the box.

 

Crank sensor. No doubt about it. Or check the plug where the crank sensor plugs into the harness.

 

Its the premium CPS from NAPA. Alright I'll give the distributor spark a try and then change the CPS again. I heard from a friend that it might be the ICM...any opinions?

 

Distributor wire to engine block test failed. Going to try new new CPS.

 

New CPS in. Does not start. Did get a backfire though.

 

Cleaned all connections as well