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25 Posts
So I was told my PCM is done in my 94 Roadmaster, I changed out the spark plugs, wires, coil, regulators, fuel pump, fuel filter cleaned the MAF sensor with that spray and the service engine light is still on (even disconnecting the battery and then reconnecting it doesn't reset it) I am still getting the same codes (4) I did before I listed them somewhere on here needless to say they all trace back to the PCM malfunctioning. So here is my question what now? the book says I have to pull the chip that's in there and erase it and reprogram it ??? but then backyard mechanics are telling me all I have to do is find one with matching numbers?? I am not able to spend another $500.00 or more on this car I'm at a loss and frustrated to say the least any help would be appreciated