checking out the IAC. how can i tell if it is bad.

mikec

Registered User
I'm pretty sure this is the part that is making the car idle very bad. How can i look at this part and determine it is defective. I already know not to go aftermarket on this part as i have replaced it back in October 2001. Is it possible that it is bad again. Car idles to 2100 when i start it anmd falls to 500 and then off. Thanks for the help in advance.
 
Usually when the IAC is bad, the car idles high then makes a dying goose sound when you shut the car off. The only way to tell its bad is by physically inspecting the plastic diapragm inside it and making sure its not broken.

Al
 
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