If it just cranks over and over with no start, try checking the crank sensor. I posted about this on two other threads. Its a pain in the butt little sensor that sits on the top diverside of the transmission bell housing and runs a wire harness into the back of the engine compartment. It senses the position of the teeth on the wheel inside the bell housing to tell the spark plugs to "spark" and has a VERY small tolerance to work. These wiggle out of place even just a micro hair and the car will crank forever but never spark.
I went through many a headache and curse word before figuring out this was the culprit. FYI ive had my jeep for 10years now and have replaced this sensor twice. On later models they made it larger with a sturdier mounting bracket to avoid this problem.
Friday, March 21st, 2008 AT 7:19 PM