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unplug IAC and nothing happens

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Old May 28, 2016 | 02:12 PM
  #1  
eddie jr's Avatar
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From: PA
unplug IAC and nothing happens

If you unplug the IAC while running what should be the result? When i unplug it, nothing happens, it idles just the same (a little rough). Does this indicate anything or is that normal for the IAC.
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Old May 28, 2016 | 02:16 PM
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From: Temecula, CA
Car: 1989 Pontiac Formula 350
Engine: L98
Transmission: 700R4
Axle/Gears: BorgWarner 3.27 Posi
Re: unplug IAC and nothing happens

Did you unplug the IAC while the car was cold and it was regulating the idle?
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Old May 28, 2016 | 04:47 PM
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Re: unplug IAC and nothing happens

Originally Posted by thtanner
Did you unplug the IAC while the car was cold and it was regulating the idle?
it was warm or pretty warm anyway cuz everything was hot in the area.
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Old May 28, 2016 | 09:41 PM
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From: Temecula, CA
Car: 1989 Pontiac Formula 350
Engine: L98
Transmission: 700R4
Axle/Gears: BorgWarner 3.27 Posi
Re: unplug IAC and nothing happens

IAC does a lot of work when the car is cold / warming up.

What lead you to disconnecting it in the first place?
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Old May 28, 2016 | 09:50 PM
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Car: 1991 Firebird Formula
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Re: unplug IAC and nothing happens

Also note that the IAC valve will stay in the same position as wherever it was you unplugged it, so I would expect that if you're already warmed up the idle shouldn't change at all when you unplug it.
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Old May 29, 2016 | 12:23 AM
  #6  
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Re: unplug IAC and nothing happens

Originally Posted by someone972
Also note that the IAC valve will stay in the same position as wherever it was you unplugged it, so I would expect that if you're already warmed up the idle shouldn't change at all when you unplug it.
that makes sense.

I had a rougher idle i was trying to troubleshoot.
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