Hey, Sorry for delay in repsonding.
A common condition is to find the idle air bypass solenoid extended all the way out (closed). This usually means the engine has an air leak and the PCM is trying to bring the idle speed back down by closing the idle air bypass circuit.
Follow the link below for a video with diagnostic proceedure and pics. This is set up on my business webpage.
Saturday, June 20th, 2009 AT 10:03 AM