PCM issue Potentially

[beaterbeliever]

Just a question. Reading some of the older threads, and going off of what Mike at Shosource has told me, I believe I have a bad PCM.
Car is a 92 MTX. Sat for approximately 10 ish years in a field covered in wasp/hornet nests. Pulled it out. Had to throw most of the interior. Dropped fuel tank, drained cleaned and derusted it. Placed new fuel pump. Just finished the 60k service as a baseline. Was able to get the car running temporarily and retrieved only a 111 code. Replaced the CCRM and now zero codes, absolutely nothing. I bypassed the PCM for fuel pump and car runs again, pretty good with just a sputter at mid to wot.

Probably the PCM, if I am correct?
Also, where is a good place to find the DIS, which I believe is the sensor module off the intake manifold?
Is there anything else I should look at in the meantime?

 

[luigisho]

It's either the pcm or a wiring ground issue. I would contact Dan Barbush SV&HOdan on the forum. He usually has a few parts cars and can usually get something used and at a good price. You can find his posts in the wanted to buy or other classifieds on the forum. Just make sure you get any of the non california emissions (which are most of them) MTX pcms from 89-95 and they will work. All the DIS modules from any of the 89-95 SHOs, regardless of atx/mtx, will also work.

 

[beaterbeliever]

It's either the pcm or a wiring ground issue. I would contact Dan Barbush SV&HOdan on the forum. He usually has a few parts cars and can usually get something used and at a good price. You can find his posts in the wanted to buy or other classifieds on the forum. Just make sure you get any of the non california emissions (which are most of them) MTX pcms from 89-95 and they will work. All the DIS modules from any of the 89-95 SHOs, regardless of atx/mtx, will also work.

Ok will do, thanks

Sent from my ONEPLUS A6013 using Tapatalk

 

[SV&HOdan]

...just happened to see this thread. I know I have some DIS modules
available and I believe I have one X2J left. Do you want me to check?
thanks,
dan

 

[beaterbeliever]

...just happened to see this thread. I know I have some DIS modules
available and I believe I have one X2J left. Do you want me to check?
thanks,
dan

Sure, that'll be great. No rush

Sent from my ONEPLUS A6013 using Tapatalk

 

[rubydist]

I would also double check the "new" ccrm, and make sure the connector is good and all the contacts are good. Replacing the ccrm should not toast the pcm.

 

[beaterbeliever]

I would also double check the "new" ccrm, and make sure the connector is good and all the contacts are good. Replacing the ccrm should not toast the pcm.

I don't think the ccrm toasted the PCM, more of a it finally died issue. The car had some serious rust issues I've been tackling, as the ccrm was a rusted piece of dust. The, oh look I can see road and is that the exhaust I see down there level of rust.
But, I'm fairly confident in the ccrm that's in it now.
But doesn't hurt to double check. I've seen somewhere here for a diagram of it with voltage readings, so I'll try to dig it up.
Open sunroof, and hood, with 10 years in a field do damage.

 

[SV&HOdan]

sorry...asleep at the wheel! I'll check right now on the x2j and get right
back with a message.

 

[beaterbeliever]

sorry...asleep at the wheel! I'll check right now on the x2j and get right
back with a message.

Pm sent

 

[beaterbeliever]

Update for future reference. PCM received from Sv&hodan was installed and after a short drive it learned and was fine, fixed fuel pump and corrected mid to wot stumble. Thanks Dan for good PCM again.