PCM troubleshooting

[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.

[decipha]

cops can do coil packs no prob

[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

[decipha]

sounds like it wasnt getting a good connection on the j3 port

are you sure u got all the plastic off ?

[redtopracer]

On the 3rd cleaning.



It starts more than once. At least



Still no tach, still missing, still running badly.

[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.

[decipha]

read the tune file off the ecu and post it

[redtopracer]

showing box code VTC5 hardware code mlc-411

[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.

[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