Ford PCM Recalibration Question

Question

I own a 2000 Mustang GT with loads of modifications surrounding two power-adders (the Kenne Bell and a nitrous kit). Strangely enough, the first thing to break was not any drivetrain component but the PCM!

I had the PCM replaced by one we bought directly from Ford with the correct box code. We had a Ford tech come down to recalibrate it, and he had to put the latest calibration into it (8 years difference from the one I had the car tuned to)

We can get the car to start, but it cannot find an idle and stalls shortly thereafter. You can keep the car running by giving it a little bit of gas. No trouble codes and the IAC works fine. Deleted the KAM and reset everything else (including battery disconnect)

The only thing the techs and I can think of is that Ford changed the calibration so much that my SCT chip with the tune for the supercharger is no longer usable. The chip was programmed using the old calibration.

Answer 1

That would be my guess also unless the SCT chip is the issue. I've seen a few of the power programmers that fit in the back of the PCM have issues and will do weird stuff such as not idle, no shifting etc if they go out.... Remove the chip and disconnect the blower and see if the car will try to run.. I think it will but may try to lean itself out because of the fuel load you are shooting for the blower.

Call SCT Monday mornign and pose this question to them as they must know... Also, if he recaled the PCm with the Chip on the back of the PCm in place, he probably zapped the programmer.. done it a few times when customers wheren't as forth coming about their mods until it cost them $300 when we zapped the programmer at the same time we zap the processor to start the recal process