Thursday, December 20th, 2007 AT 3:22 PM
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!