Mustang and Ford Performance Forums banner
1 - 6 of 6 Posts

· GearBanger Extraordinaire
Joined
·
1,003 Posts
Discussion Starter · #1 ·
I had the IAC changed about 6 months ago. Ever since I bought the car whenever the a/c was on you could hear the idle drop down then come back up again intermittently, and it would stop when the a/c was off.

Now all of a sudden it's doing the same thing when the heat is on and more specifically when the defroster is on. Only now there is a loud and significant sound of rushing air almost seeming like it is blowing against the throttle body and causing the idle to get really jacked up. It will do it on start-up and on again, off again every minute or two. I've never had this problem before so I would like to narrow the tune out of it for now as I am really leaning to a mechanical issue.

Any input would be appreciated.
 

· Registered
Joined
·
644 Posts
Have you changed out the coolant or tstat? Might not be burped properly
 
1 - 6 of 6 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top