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1999 Ford Mustang Replacing the IAC valve. What do I need

Tiny
PMH
  • MEMBER
  • 1999 FORD MUSTANG
  • V8
  • 2WD
  • AUTOMATIC
  • 89,000 MILES
I am replacing my IAC valve in my 1999 Mustang GT and I wanted to know the proper way to do this. I seem to remember reading somewhere that the new IAC needs to be 'reprogrammed' for the proper airflow, etc. Is this the case? If so, is this done automatically? Do I need to disconnect the battery before replacing it? Any information is appreciated. Thanks!
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Thursday, December 20th, 2007 AT 3:22 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
You should remove the - battery cable before ever doing something mechanical to a car.

Simply remove the IAC and clean the mating surfaces and clean out the housing and install a new one and gasket.

The PCM will have to relearn after having the battery connected, which it does automattically after a few times of it being driven.
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Thursday, December 20th, 2007 AT 7:01 PM

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