IAC is the idle air control valve, it limits the amount of air going into the engine therefor setting the idle.
It is what makes the vehicle run faster on cold start ups then slows down when it warms a tad.
Also the fuel filter will go out it isnt invincible! Theres none inline fromt he tank to the engine?
Sometimes the fuel pump relay can solve this.
Thursday, March 6th, 2008 AT 7:03 AM