Not really a test, just some info. I helped a guy who was told his SKIM was messing up and locked them out so they couldn't start the rig. Mechanic wanted 2 grand to fix it. He sent the PCM to us with the ignition key, lock cylinder, and SKIM module. We plugged it into a good vehicle, found out the PCM was bad, located another one, added 2 SKIM keys to the existing single and programmed it all to work. The labor plus the new parts was about 450ish out the door back to him.I do not think an ignition misfire. It would most likely be 2 cylinders because of the waste spark setup.
A fuel injector caused misfire maybe.
I would suspect many 05 and 06 PCMs get swapped because of the bad press they get on the forums.
Is this a test? Do you already have it sorted out?
No, this is a coil on plug waste fire with 3 coils in the coil rail.I get a single missfire occasionally when engine braking down a large bridge. Is that a similar case to when yours happened?
Edit: mine is a 97 though
He replies back, okay, good, now we know to look someplace else. Grrrrrrr!
He replies back, okay, good, now we know to look someplace else. Grrrrrrr!
I'm done with it. I have two resolutions in place. If he still insists the part is bad, I'll send him back what he paid for it and he can start over. If he insists that we did something wrong again, I'll send him the money he paid for labor and he can start over. There were 2 phone conversations where I tried to explain this to him and he would not have it. He insisted that the part was bad and causing a misfire. I explained that we had installed the new to us PCM, fired up the rig, ran the scanner on it, found it acceptable and then programmed the SKIM to it and then programmed two more keys to the SKIM. There is no way it died in transit. He still would not have any part of it. Fine, send it back, I will put it back in the rig and test it again. I'm done now, all the way done.The basic problem, here, is that he trusts the mechanic and doesn't trust you...which is why he needed a machine to verify what you were saying. Don't expect that to change.
He replies back, okay, good, now we know to look someplace else. Grrrrrrr!
I think this is how shitty mechanics without troubleshooting skills like do do stuff.... "Well, I can't figure it out so I think that there computer thingy is bad "
I have personally seen 1 bad pcm on a chrysler. It was like that when I bought my jeep. I had a wire chafe through and shorted out on the firewall. Caused the IAC motor to only increase idle, not decrease. Troubleshot the wiring , fixed the wire, reman pcm, fixed.
Do PCMs fail for no reason? Sure, but not as often as people are led to believe.
Most PCM's fail due to capacitors failing...I think this is how shitty mechanics without troubleshooting skills like do do stuff.... "Well, I can't figure it out so I think that there computer thingy is bad "
I have personally seen 1 bad pcm on a chrysler. It was like that when I bought my jeep. I had a wire chafe through and shorted out on the firewall. Caused the IAC motor to only increase idle, not decrease. Troubleshot the wiring , fixed the wire, reman pcm, fixed.
Do PCMs fail for no reason? Sure, but not as often as people are led to believe.
What is wrong with swapping on a known good coil rail?Well what about an individual plug or a compression problem? Cam lobe wiped? I am going to convert to the V10 ignition coil and do coil near plug just so I can troubleshoot a problem like this.
https://www.naxja.org/forum/showthread.php?t=1066869&highlight=viper+coil&page=4