Few weeks back I was out in the desert wheeling and we stopped to take a break. Went to start up and it would not fire. No Spark. I just got a chance to work on it the other day. No codes were logged, replaced the CPS still no spark. Swapped out my extra coil pack, still no spark. Any ideas on what could be causing this? It was running fine up until the point I shut her down. Also she was having trouble starting once warm, figured my fuel temp sensor might be going out, but that shouldn't give me a no spark problem to my knowledge. Thanks for any help you guys can provide.

Scott

 

If spacers for CKP (crank shaft sensor) did not go back on right, it would not work. Very precise fit. Or ECU and/or fuses. See attached.

 

Also as with all 15+ year old vehicles check the wiring to the sensor as well.. CKPS is pretty much the only think I know of that will deactivate spark. Besides shot or disconnected coil..