1997 Jeep Replaced PCM & Engine shuts down after 2 secs
I recently parked my 1997 ZG Jeep Laredo 4 lt Petrol. only to find it just never to start again, It would crank over but just not start. After several tests by my mechanic neighbour. He was 100% sure I had a faulty PCM. I purchased a second hand pcm with same numbers out of a running vehicle. Now it starts perfectly for 2 seconds then shut down.?? (with the old pcm it would not start at all)
During this whole process I had to get a new battery also.
The key fob (black key) works fine, but I think it may be the engine immobiliser ?. shutting the engine down. I have also disconnected the battery to drain any charge and hopefully reset the pcm and/or enable the immobiliser. This did nothing.
I have no flashing red light on dash (never have had)
I had an Auto electrician out with his scanner and he could not work out the problem and left saying "he would have to do a little research" (that was 4 weeks ago.He's not coming back!!)
Can somebody please help me with this issue in getting my only transport up and running again.
I recently parked my 1997 ZG Jeep Laredo 4 lt Petrol. only to find it just never to start again, It would crank over but just not start. After several tests by my mechanic neighbour. He was 100% sure I had a faulty PCM. I purchased a second hand pcm with same numbers out of a running vehicle. Now it starts perfectly for 2 seconds then shut down.?? (with the old pcm it would not start at all)
During this whole process I had to get a new battery also.
The key fob (black key) works fine, but I think it may be the engine immobiliser ?. shutting the engine down. I have also disconnected the battery to drain any charge and hopefully reset the pcm and/or enable the immobiliser. This did nothing.
I have no flashing red light on dash (never have had)
I had an Auto electrician out with his scanner and he could not work out the problem and left saying "he would have to do a little research" (that was 4 weeks ago.He's not coming back!!)
Can somebody please help me with this issue in getting my only transport up and running again.
Your symptoms sound like an immobiliser.
Regards A
__________________
Lay down with dogs and you will wake up with fleas; scratching the surface not treating the disease. Over 5'000 Club
Are you in direct line of sight of any Mobile transmission tower's.... It can effect the ZJ's no end.......... Similar signal to the Jeep's which will interfer with the ZJ.......
Thats the immobiliser which is built into the body control module.The BCM is coded to the PCM (Powertrain Control Module) from new so unless you get the BCM from the exact same car as PCM came from your not able to disable the immobiliser.
Ps, youll also need at least one remote from donor car to reprogram your old remotes or get Jeep dealer to do it.
__________________
I used to be indecisive but now Im not so sure!!!
Make sure that the VIN # doesn't have to be programmed into it. In the newer models the VIN has to be put into the ECM and some of the other modules and a mismatch will do exactly what you have seen shutdown.
Was the new computer programmed to suit your car, I think when I got mine from the USA they needed vin numbers, I assumed it was so it was compatable with the immobiliser
AJOR does not vouch for or warrant the accuracy, completeness
or usefulness of any message, and are not responsible for the contents of any
message. The messages express the views of the author of the message, not necessarily
the views of AJOR or any entity associated with AJOR, nor should any advice
be substituted as technical advice replacing that of a mechanic. You agree,
through your use of this service, that you will not use AJOR to post any material
which is knowingly false and/or defamatory, inaccurate, abusive, vulgar, hateful,
harassing, obscene, profane, sexually oriented, threatening, invasive of a person's
privacy, religious, political or otherwise violative of any law. You agree not to post any copyrighted
material unless the copyright is owned by you or by AJOR. The owner, administrators
and moderators of AJOR reserve the right to delete any message or members for
any or no reason whatsoever. You remain solely responsible for the content of
your messages, and you agree to indemnify and hold harmless AJOR, the administrators,
moderators, and their agents with respect to any claim based upon transmission
of your message(s). The use of profile signatures to intentionally mislead or misdirect any member on this forum is not acceptable and may result in your account being suspended. Any trip that is organised through the AJOR forum is participated
at your own risk. If you or your vehicle is damaged it is your responsibility,
not that of the person that posted the thread, message or topic initiating the
trip, nor the organisers of AJOR or moderators of any specific forum. This forum
and associated website is the property of AJOR. No user data is harvested and no information supplied in your registration will be sold for profit.
1997 Jeep Replaced PCM & Engine shuts down after 2 secs
