IAC Valve? - Mustang Evolution

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Old 11-19-2013, 12:31 AM   #1
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IAC Valve?

How can you tell if your idle air control valve is bad? I was sitting in mcdonalds drive thru the other day and my rpm's went from 600 to 900 to 200 a couple times then died. This happens at stop lights all the time and I have to tap the throttle and yell at my car till the light turns green. I've checked vacuum lines countless times. Has this happened to anyone?
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Old 11-19-2013, 10:18 AM   #2
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Yes it is bad. You can try to clean it but in my case replacing it was the best option. You have to be careful when the aic is bad on an autistic car like mine. When the aic was bad it would lurch forward at stops because of the rpm fluctuations. I almost rear ended someone.
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Old 11-19-2013, 10:40 AM   #3
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Yeah I can see that in an automatic but thankfully mine's manual trans. I got a new iac on order from summit we'll see if it works
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Old 11-19-2013, 11:28 AM   #4
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How to test the IAC valve...
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Old 11-19-2013, 11:31 AM   #5
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I got a V6 but my iac is bad but I'm no mechanic. Can anyone show me where it's located
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