My 1992 Jeep Cherokee Laredo seems to be going thru several PCM's in the last year or so. It runs ok then you shut it off and upon restarting at a later time it tries to run for a second or two and nevers starts. If I change out the PCM it will start up and go for a month or two until this happens again. Do you have any answers?

Transmission sticks in reverse- won't go into park. - JeepsUnlimited

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Jun 14, 2013 - 12 posts - ‎5 authors 2003 6 cyl 4x4 Grand Cherokee Laredo automatic- Occaionally, when shifting from REVERSE TO PARK, my Jeep will stay in reverse. Typically its ... '2001 WJ'4,0L'42RE'NV 242'380000 km'ECE Compliant' ??????????? ??? ...

2001 jeep grand Cherokee laredo - CarGurus

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CarGurusJan 27, 2014 - 2001 jeep grand Cherokee laredo - Just purchased a 2001 Jeep GrandCherokee Laredo and ... It starts in PARK sometimes and sometimes it won't and I have to start it in Neutral. ... Hatch shuts flush, but won't stay shut. help!

Get yourself an ohm meter or just a regular test light, start from there, check wires to fuse box and behind gauges and so forth, if the light don't light up, most likely is a break in the wire, can also be an electrical switch or another possible fuse

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23-Intake air temperture sensor or circuit

41-Alternator field not switching properly

62-Emissions Maintenance Reminder (EMR) or PCM

check the cam sensor and crank sensor, also is the distributor turning,possible distributor gear pin broke

It could do that with a bad switch if it was making poor contact before it disconnects, but that really sounds a lot like the fuel pump is going bad...they overheat and start to bind up, then stop...once cooled down they work just fine till it again gets hot enough to do the same thing all over again. I really hate doing this online because in real life, I'd be doing tons of testing instead of making "educated guesses"

Does the vehicle crank for extended period of time upon first starting? If so the fuel pump needs replacing.

Try replacing the crankshaft sensor sounds like thats your problem if not the fuses or relays still no luck them you might have pcm problems....