Hey guys me again. I have a 94 navajo and the engine was revving to 5000 rpms for no reason at all. Well there was a reason what it was there is a rubber gasket sleeve where the air intake tube hooks up to the throttle body. It came apart and got sucked into the butterfly valve jamming it open. I hope this information can help anyone who may have this problem in the future and i would like to thank all those who helped me in this matter. Steve