Bricked OBD2 PCM, thinking of going to OBD1
10-03-2018, 03:20 AM
#1
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Join Date: Mar 2008
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Bricked OBD2 PCM, thinking of going to OBD1
Well, 2 weeks and a handful of flashes later, I already bricked my PCM in my 96 SS using Jetflash. Followed all precautions, program just crashed.
Anyway, the local U Pull it has a 95 Cadillac Fleetwood and PCM's from there are only 30 bucks. This PCM would work, right?
Furthermore, only other thing i'd really need is a 94/95 knock sensor, correct?
Anyway, the local U Pull it has a 95 Cadillac Fleetwood and PCM's from there are only 30 bucks. This PCM would work, right?
Furthermore, only other thing i'd really need is a 94/95 knock sensor, correct?
Last edited by slikrider20; 10-03-2018 at 03:24 AM.
10-13-2018, 06:19 PM
#2
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Re: Bricked OBD2 PCM, thinking of going to OBD1
There’s no question whether you can install a 94/95 F-Body LT1 OBD-1 PCM in a 96/97 F-Body LT1 OBD-2. Gets done every day. Works fine, identical harness pinouts, etc.. Yes, minor changes like using the low impedance 93-95 LT1 knock sensor in the 96/97 engine to match the requirements of the 94/95 PCM. The question is whether the B-Body LT1 OBD-1 PCM is an acceptable replacement for the F-Body version.
OBD-1 advantage is elimination of intrusive OBD-2 diagnostics like the after-cat O2 sensors, EVAP vacuum detection, AIR system flow detection, CKP misfire detection (which some might not see as a good thing). Also easier to program with low cost/no cost software, compared to the expensive OBD-2 software.
Unfortunately I don’t know the specific answer regarding the Cadillac PCM, just wanted to put the discussion on track.
OBD-1 advantage is elimination of intrusive OBD-2 diagnostics like the after-cat O2 sensors, EVAP vacuum detection, AIR system flow detection, CKP misfire detection (which some might not see as a good thing). Also easier to program with low cost/no cost software, compared to the expensive OBD-2 software.
Unfortunately I don’t know the specific answer regarding the Cadillac PCM, just wanted to put the discussion on track.
10-17-2018, 12:06 PM
#3
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Re: Bricked OBD2 PCM, thinking of going to OBD1
Well, turns out, the cadillac PCM works just fine. It was basically just plug and play, and I managed to get a new Knock Sensor on Amazon for only $10.
Tuner Cat was able to repair my OEM PCM for just $25, so I went ahead and sent that in.
Also, picked up an obd2 PCM that was on a Buick Roadmaster, again, was skeptical if it would work, but it does.
The only issue I had was that when I tried to flash the Roadmaster PCM onto my Camaro, it would say that it wasn't for the right vehicle and wouldn't flash. I got around this by simply changing the VIN in the tune, rather than in the PCM, for it to flash properly.
So, if anyone runs into these issues going forward - this is how it works. Also, i'm happy I have 2 extra PCM's laying around incase **** hits the fan again
Tuner Cat was able to repair my OEM PCM for just $25, so I went ahead and sent that in.
Also, picked up an obd2 PCM that was on a Buick Roadmaster, again, was skeptical if it would work, but it does.
The only issue I had was that when I tried to flash the Roadmaster PCM onto my Camaro, it would say that it wasn't for the right vehicle and wouldn't flash. I got around this by simply changing the VIN in the tune, rather than in the PCM, for it to flash properly.
So, if anyone runs into these issues going forward - this is how it works. Also, i'm happy I have 2 extra PCM's laying around incase **** hits the fan again
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