Joel Tilford

Hi all! New to the Cherokee world, just picked up a 96 jeep Cherokee sport cheap, that wouldn't start after someone drove to the store. I assumed it was the CPS, since it had no spark.

Replaced it, no luck. Also has no fuel pressure, pump won't kick on. Tried moving relays around with no change.

A code reader will not connect to the PCM. I can't get it to give me any info. Does this mean my PCM is simply bad?

i want to replace it, but I can find no real answers on what PCM I can put in, how to I.D a California emissions PCM (I'm in California) and whatnot.

i have included a picture of the part number on my PCM, can someone help me on what I can replace it with? and should I replace it?

freegdr

What does emissions sticker under hood say ?

CCKen

Don't know where PCM part number 56041251 comes from. It doesn't show up in the '96 parts catalog. But It does exist. I checked a MOPAR site and plugged that number in and it showed it but not which Jeep it goes to.


The parts catalog listing for a '96, 4.0, auto trans, calif emissions, is part number 56027892.

freegdr

Come back as 96 ...http://www.fs1inc.com/engine-compute...m-pcm-oem.html

Joel Tilford

Here is the sticker. Attached is another sticker which is also
on the car but is blank? Maybe it was changed?

Joel Tilford

does this mean I can bolt a 56027892 PCM in and be good to go, smog and all?

also, do all the numbers need to match, or just the ones listed above? If that's the case, I may just buy a used 56041251.

94XJYKuz

Normally no communications with the PCM is caused by a power circuit not feeding the PCM. I would start by checking fuses. Check them all you could have more than one blown. If you get multiple fuses that should have power without power check for bad connections and/or fusible links at the starter. Hope this helps.

Joel Tilford

I should have said this, it was slightly intermittent before final failure. Which is why I did not go through fuse checks.

Joel Tilford

Checked all the fuses, no problems there.

Any suggestions?

CT-Shooter

subbing, im having a pretty similar issue, do you get a check engine light when you turn the key on?


have you looked into the ASD system?

Joel Tilford

Just for closure, I solved this issue with a used PCM. Any matching PCM number from a 96 will work in a 96. No vin flashing needed.


there is much confusion on this but at least for 96's, don't worry about a vin reprogram!

CT-Shooter

mine was also a pcm, i put a used one from a 00 xj in it and it works fine