• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

what happens when your idle air control valve is bad?

A

andy614

New member
My car has been running rough and I think it could be an idle air control valve is bad. I have a 1994 grand prix GTP, so if it is bad what are some significant indications that it is bad?
 


If the IAC is bad it won't usually start since the throttle plate is closed completely and the IAC is shut there's no air getting into the engine. When this happens you can normally get the motor started by holding the gas pedal down a bit to open the throttle plate
 
I get it to start by giving it gas, but it only does this when its cold. any ideas what else it could be?
 
its a possibility that your throttle body is loaded with cooked carbon and that it so happens to clog up the IAC and prevent it from moving, and/or the IAC decided that its time to retire (correct me if I'm wrong)...
 
I'm in agreement with cleaning the TB. It's a good starting point and will ensure the IAC can move freely if it's gunked up.
 


You must log in or register to reply here.
Back
Top