iac keeps reset itself
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Senior Member
Joined: Feb 2006
Posts: 682
Likes: 0
From: newcomerstown,o
Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
iac keeps reset itself
i keep set it to 1 1/8. runs fine for 2-3 mins starts popping out exhaust ,take out iac and its 1/2 inch shy of 1 1/8! why does it keep doing it?
Joined: May 2004
Posts: 2,262
Likes: 1
From: houston
Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
Re: iac keeps reset itself
the IAC, or Idle Air Control is what the ECM uses to control idle speed. it does that by either extending or retracting the plunger.
the correct way to set the base idle is,
https://www.thirdgen.org/tpimod2
the correct way to set the base idle is,
https://www.thirdgen.org/tpimod2
Supreme Member
iTrader: (2)
Joined: Sep 2003
Posts: 10,494
Likes: 3
From: Woodland, CA
Car: '02 Z06
Engine: L33 5.7
Transmission: T56
Axle/Gears: Stock IRS
Re: iac keeps reset itself
if its still screwy, i say your iac is getting stuck on the return side. possibly bad internal connection.
replace it (y)
replace it (y)
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