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post #8 of (permalink) Old 12-15-2010
wmburns
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troubleshoot IAC idle problems 1996-2004

If you put the car in neutral while moving, what do the RPMs do? Use the brakes and come to a complete stop. Describe what the RPM's do as the car stops?

If the RPM's hover around 1000-1100 while the car is moving and then drop to 500-650 when it stops, this is NORMAL. It is done for SMOG reasons.

An idle around 2-3k while moving is NOT normal.

Check out the information below. Information on how the IAC works. Along with tests that will help narrow down where an idle problem might be.

>>>how to troubleshoot IAC idle problems 1996-2004
https://www.allfordmustangs.com/forum...ml#post2260649

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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