i just got a 2002 mustang gt. i am having problems with the car idleing.... my car idles around 750ish, but i found that when i have my defrost/heater on, the car idle kicks up to around 1250 for a few seconds and kicks back down.. this repeats over and over, anyone know whats up? Thanks
When the A/C compressor kicks in and out it will cause the idle to jump. Normally the computer can adjust so there's not much fluctuation but are there any mods to the car? ALso,does the A/C system work?
I guess i should explain that the car uses the A/C compressor to de-humidify the air when using the defrost and that helps clear the windshield faster.
I have the same year GT. Check the belt make sure its got good tension. Then I would clean the IAC, its cheap and doesnt hurt , just helps. I hate to be one of those people but try the Seafoam, its a champ man. Cleaned my idle right up.