pcm

  1. G

    1993 YJ PCM Issues, why won’t a 1995 PCM work?

    Hello everybody! New member here. I have a 1993 2.5l yj which has been having pcm issues. When cold starting, it’ll run good for approximately 10 minutes before it gets boggy and starts backfiring at 2500 rpm. This limits the speed to under 80 klicks. I have 2 remanufactured pcm’s that are from...
  2. 94-92 YJ DFW

    Rewiring Engine Harness - Connector Identification Help Needed

    I am a pretty new Jeep owner here looking for some assistance with wiring connectors. I bought a 94 Wrangler with a 4.0L with an AX15 manual transmission, no AC, after I did some digging I found that the vehicle originally had the 4 cylinder engine so at some point a previous owner swapped the...
  3. 93WhyJ

    93 YJ 2.5 5-speed; crank, no start, no check engine light

    Hey Folks, hoping to get some advice for my new-to-me YJ. The issues began with not having a check engine light, no fuel pump prime and hard starts. Then low power, sputtering, back firing and stalling when driving. Checking the forums, all issues pointed to the PCM, so I removed it, replaced...
  4. M

    Pop noise, then Jeep died, now it won't restart

    Hello! This is my first post on this forum. I have a 1994 Jeep Wrangler YJ Sahara 4.0L with a manual transmission. Driving to work this morning the jeep was running great at about 70mph on the interstate and then I heard a pop noise, the engine lost power, and I coasted to a stop on the side...