We've been having a problem with my wifes '93 Wrangler,2.5, 5 speed for about a month now. About a month ago it died acting like it wasn't getting fuel. I replaced the fuel pump and fuel filter. It started but again died while driving down the road. After checking the codes and getting some ideas from the board I changed the crank position sensor(ckp) and the coil. It fired right up and I went for a test drive. Hit a bump and it died. It finally started up and I hit another bump and it died. It restarted but was sputtering and hesitating awful and died again. Let it set and it fired up and ran fine and I drove back home. It died pulling in the yard. It refired but was sputtering and wouldn't go over 1700 rpm.I shut it off let it set a minute and refired it and it ran OK. As it was idling I got out and wiggled a bunch of wires and unplugged the map sensor which caused it to run rough and I plugged it back in.I shut it down and restarted it and it ran fine. I checked the codes:12(my step son helped himself to the battery the other day),33(I have no idea it doesn't have AC),11,14(I unplugged the map sensor),54,15 and of course 55. Does 54 mean the cam position sensor is bad in the distributor? If so the sensor(the pick up stator?) is $68. from NAPA and a remaned distributor is $72.50....I'm a little lost as what to change next...any thoughts?
Just a shot in the dark....have you done any wiring or mods under the jeep?? Look for a loose wire touching the exaust somewhere. That sounds just a lil too intermittent to be throwing sensors at it. . Happend to me Happy Wheelin'
We did a complete frame swap in June/July and added a lift kit and new body mounts with a 1" lift built in. I'll climb under it and take a look to see if a wire could be hitting. I cleaned all the grounds on the engine when we hooked the wiring back up. It ran fine until early September then the gremlins started coming out.
At the moment it will crank over but not start. I removed the cap on the shrader valve on the fuel rail and pressed the stem down and fuel barley trickled out. It's got a new fuel pump and I tried replacing the fuel pump and auto shutdown relays. What am I missing????
Key to the problem is the YJ running poorly every time it hit's a bump. It sounds electrical in nature. I do believe that all those sensors noted in the DTC's you named have a common ground at the PCM.
Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....
If what doesn't kill you, makes you stronger, I should be able to bench press a Grand Cherokee by now!