Iac
Thread Starter
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
Iac
I replaced my IAC, now my car idles around 850 rpm.
I did procedure to reset the IAC, start the car andd turn off after 5 secs and then wait 10 and start the car again and it did not reset to normal.
Did I mess up something or not do it right?
It is a a4.
I did procedure to reset the IAC, start the car andd turn off after 5 secs and then wait 10 and start the car again and it did not reset to normal.
Did I mess up something or not do it right?
It is a a4.
Thread Starter
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
Forgot to mention, in the 1st step, I did slightly press the gas.
Drove it 25 miles to work, still idles high.
Does it matter if the engine is cold or hot when trying to reset the IAC?
Thanks!!
Drove it 25 miles to work, still idles high.
Does it matter if the engine is cold or hot when trying to reset the IAC?
Thanks!!
Pro
Joined: Apr 2005
Posts: 590
Likes: 0
From: Boynton Beach, FL
It doesn't sound like you reset the minimum air setting.
Turn on ignition
Wait 10 seconds and disconnect IAC connector
Start engine
Adjust Idle screw to minimum idle speed (550rpm)
Turn off engine
Reconnect IAC
Start engine.
Larry
Turn on ignition
Wait 10 seconds and disconnect IAC connector
Start engine
Adjust Idle screw to minimum idle speed (550rpm)
Turn off engine
Reconnect IAC
Start engine.
Larry
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Burning Brakes
Joined: May 2006
Posts: 1,097
Likes: 2
From: Richfield Utah
Originally Posted by Vetracr
It doesn't sound like you reset the minimum air setting.
Turn on ignition
Wait 10 seconds and disconnect IAC connector
Start engine
Adjust Idle screw to minimum idle speed (550rpm)
Turn off engine
Reconnect IAC
Start engine.
Larry
Turn on ignition
Wait 10 seconds and disconnect IAC connector
Start engine
Adjust Idle screw to minimum idle speed (550rpm)
Turn off engine
Reconnect IAC
Start engine.
Larry
Or you have a vacuum leak, Or like CFI-EFI has mentioned. If the gasket on the IAC is to thick, it will get extra air by not closing the valve properly. That is just like a vacuum leak. The two walk hand in hand... 