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
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
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... 