Throttle body. Remove air cleaner and look at injectors when you turn the key on to see if one drips a little gas. If it does then something is stuck inside. Also unplug the egr valve and lightly tap on it with a hammer to make sure its seated, leave it disconnected and see if problem goes away, it may have been partially open. Also a coolant temp sensor for the computer thats reading lower that it should be can cause this. *** Is it losing coolant? Burning oil?
Wednesday, May 28th, 2008 AT 8:19 PM