Hello I'm having a little trouble keeping my Rpm's down when I drive. The car will drive shift and cruise. Just coming to a stop the car won't drop the Rpm's under 2600-2800. I checked the throttle cable everything was fine. I check the throttle body and I am under the impression that the throttle is stuck open about 15-20%. Though I'd like some assistants with my problem. Has anyone gotten pass this problem?