2001 Dodge Ram 4X4 5.9L
I didn't drive my truck for one day the next day I get in and it won't idle. Starts up and if I give it gas it will run but when I let it down to idle it dies. I think it is a vacuum leak. Could it be my pcv valve? Anyone else run into this problem?

Thanks Any Imput is greatly appreciated.
David

 

Remove and clean the IAC. Look in the DIY section for a how to.

 

remove and replace the IAC. the little bastards frequently fail.

 

Get some throttle body cleaner and use it following the directions and see if that helps. It has worked for me on a couple occasions.

 

You IAC (Idle Air Controller) has failed in the closed position and will not allow air to pass to maintain idle combustion. When you step on the throttle, you open the throttle plates and air can get in. No throttle=closed plates=no air=no combustion.
The IAC is located on the back side if the throttle body and is held on by 2 #25 torx screws. Roughly $40 and 5 minutes to replace.

 

Yep it was the IAC valve for me as well!!