Anoying Problem!!!!

[jdgt281]

I have an 03' GT with several mods, including a P-51 intake which I just installed last week. My question is that the car runs great going down the road and at wot but at idle I hear a huming noise coming from the center of the intake. The car Idles a little high and hangs a bit until I take the hose off for the idle air control valve and pinch it off, and then it idles great. I have checked for air leaks and I can't find any. If anybody has any suggestion please reply. Thanks !!!!

 

[Two Wheel Peel]

I would call the place that builds the intake and tell them your story. I bet they have a good idea of what it could be.

 

[stng]

I would try replacing the IAC

 

[sgarlic]

I'd yank the IAC and clean it first with some throttle body cleaner, let it dry real well, then put it back on, see if that does anything.

 

[Kilgore Trout]

Could be the IAC, could also be a vacuum leak somewhere.