I have a 94 YJ, 2.5 4 banger, completely stock. A few months ago, it began to get harder to start. I changed the plugs, oil and fuel filter, a bottle of injector cleaner and ran it for 8 weeks, ran great, but still took a long time to fire up. So... a couple weeks ago I changed the wires, rotor, dist. cap thinking that would help. No luck, matter of fact, would not start at all! Pulled a plug wire and held it to the engine block and found I had no spark.... so I thought maybe the coil was bad.. Replaced the coil, no good. Went and got my multi-meter and started checking things. I had 12 V at the coil, so that's great.... checked wiring for continuity, that all seemed fine.... so why no spark? So I did the fault code thing... got codes 12, 33, and 55.. nothing there. I cleaned both battery terminals, and all grounds both to the chassis and engine.. still the same thing... crank and crank.... then I hear a clicking sound... traced it to the Auto shut off relay and found that after the clicking sound stopped, the engine fires up in an instant and never misses a beat... runs great! Problem is, when I shut it off and let it sit for an hour or so, it does it all over again. Changed the relay, same thing... Looked at the wiring diagrams and thought maybe it was the camshaft position sensor in the distributior assembly, changed that out... No good... AHHH!!!!
Since this is my daughter's main ride, I don't want to let her drive it like this, cause you never know when it's Kaput! Anyone out there ever have this issue before? Probably something simple I've missed, and I have very little hair left to pull!!!
Any help is greatly appreciated!!!