hi im new here and this jeep has me confused.ive checked evrything i could think of and cant figure it out.any help would be great.only thing i could think of else was the pcm.

does the CHECK ENGINE light come on when you turn the key to the "ON" or "RUN" Position?

if not then the CrankShaft Position Sensor is bad.Or ECM/PCM/ECU is bad. start with the CPS tho cheaper and most likely the cause.