PLEASE CLICK LIKE AND SUBSCRIBE!!!! My wife's 2007 Dodge Durango 4.7L had a vacuum leak and had been idling extremely high for months. We didn't know what the problem was until we finally mentioned it to the correct person. The guy at O'Reillys!! LOL! I can't remember his name or I would totally give him a shout out! When I say high idle, I mean anywhere from 1500 to 2000 RPM's. I didn't even have to accelerate away from stops. Just let off the gas and it would go. I'm thrilled to say the problem has been fixed!!