T-Bird EEC Code

I'm a little unsure,,
It would be 3 or 4 digit codes that a tuner would use to burn a chip.
Eg: LC1

My problem, I have a car at the tuners shop with a 97 Mustang computer trying to talk to a 89 SC IAC sensor.
 
The Mustang EEC is saying that the IAC is stuck open. It is not stuck open. It is a brand new SC IACon a Magnum Powers 85mm throttle body. Used IACs have the same result.
This is a problem with the Mustang EEC communicating with the early model SC IAC.
 
Maybe the reference voltage is different and the ECC module is reading that. Have you tried a 97 Mustang IAC?
 
birds4us said:
Have you tried a 97 Mustang IAC?
I'm trying to locate one to try that route. I gave the one I had away (prematurely LOL) figuring I'll never need it again.
 
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