How does one know when it is time to replace the IAC?
How to tell when the IAC needs to be replaced?
- Thread starter Rodger Tellefson
- Start date
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Mike Wilson
Well-Known Member
There is supposed to be a cleaning procedure here on the site as a member project.
Just had my '05 back to the dealer for several small problems, rough idle and
stalling was one of them. The dealer said that on our tracs, is should be a kind of
maintenance, akin to replacing a belt or air filter. They had to replace mine under
the 3/36 warranty, as they said it was better to replace it under warranty than to try
to clean it at this stage, and have the same problem show up again under warranty
(Doesn't look good for Ford!). But the Service Manager, who was very helpful, (thank you
Sloan Ford, Columbia, TN.), said that a 15-20,000 mile interval should be acceptable.
Mine had 19,000 miles on it, and they determined that the rough idle/stalling was
caused by a "Sticking 'Pintle' in the I.A.C. Valve" Cleaning is acceptable, and can restore
idle to near-new conditions with the cleaning procedure. Mine has idled as smooth as
glass ever since!
Just had my '05 back to the dealer for several small problems, rough idle and
stalling was one of them. The dealer said that on our tracs, is should be a kind of
maintenance, akin to replacing a belt or air filter. They had to replace mine under
the 3/36 warranty, as they said it was better to replace it under warranty than to try
to clean it at this stage, and have the same problem show up again under warranty
(Doesn't look good for Ford!). But the Service Manager, who was very helpful, (thank you
Sloan Ford, Columbia, TN.), said that a 15-20,000 mile interval should be acceptable.
Mine had 19,000 miles on it, and they determined that the rough idle/stalling was
caused by a "Sticking 'Pintle' in the I.A.C. Valve" Cleaning is acceptable, and can restore
idle to near-new conditions with the cleaning procedure. Mine has idled as smooth as
glass ever since!
Dominoelover thegamenotthepizza
Active Member
From the projects section- "If your ST stalls, runs rough, idles funny, This might be the fix for you. Please make sure there is no Check engine light on, Or a more serious problem."
My Edit: After I replied to your post, I see you said "replaced".:huh:
I don't think it is recomended at a certain time interval. But I would only replace it after I tried doing the project.
My Edit: After I replied to your post, I see you said "replaced".:huh:
I don't think it is recomended at a certain time interval. But I would only replace it after I tried doing the project.
Last edited by a moderator:
We've got over 112k on our ST, and have cleaned it several time as per Todd Z's project. I can understand why an IAC would be replaced under warrenty, so I'll just keep cleaning & re-lubricating it until I can't do that any more. Unless anyone has further input. Thanks
Glenn Brown
Active Member
90,000 miles and I haven't done a thing to my IAC! Is this normal or just luckY??
David Griffith 2
Well-Known Member
I had mine replaced about 4 months ago and I'm thinkin it's time for a cleaning.. It seems like its idling so low it's about to shut off. Is it possible to just have your idle set too low?
