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Re: PCM troubleshooting
Posted: 2022 Jul 14, 21:44
by redtopracer
So.
Did you know the vics and marquis came with cop's that year?
And mustangs didnt?
Doesnt seem like either would run a mustang right.
Re: PCM troubleshooting
Posted: 2022 Jul 14, 22:36
by decipha
cops can do coil packs no prob
Re: PCM troubleshooting
Posted: 2022 Jul 14, 22:40
by redtopracer
Threw errors for a, b, c, and d coil circuits
And acted like it didnt know what kind of injectors and maf it had.
Ran worse than the f150 pcm
Re: PCM troubleshooting
Posted: 2022 Jul 14, 22:46
by decipha
sounds like it wasnt getting a good connection on the j3 port
are you sure u got all the plastic off ?
Re: PCM troubleshooting
Posted: 2022 Jul 14, 23:43
by redtopracer
On the 3rd cleaning.
It starts more than once. At least
Still no tach, still missing, still running badly.
Re: PCM troubleshooting
Posted: 2022 Jul 15, 01:25
by redtopracer
Did a side by side comparison of my old j3 port and the current one.
Definitely not the connection.
Could use some input here. Still getting all coil circuits open mil
Still no tach
Car is extremely unhappy with it.
Re: PCM troubleshooting
Posted: 2022 Jul 15, 10:19
by decipha
read the tune file off the ecu and post it
Re: PCM troubleshooting
Posted: 2022 Jul 15, 11:47
by redtopracer
showing box code VTC5 hardware code mlc-411
Re: PCM troubleshooting
Posted: 2022 Jul 16, 00:24
by decipha
Has to be getting a good connection as she read out fine. That is indeed a stock vtc5 file.
That ecu isn't compatible for whatever reason.
Tach isn't going to work though as the marquis ecu doesnt have a tach output.
Re: PCM troubleshooting
Posted: 2022 Jul 16, 10:50
by redtopracer
Well thats swell.
Fml
Knew i should have just bought the $200 ecu that i knew worked
Guess a 98 town car or vic ecu would be as equally useless