MY truck had been sitting for about a week. Yesterday when I pulled out of the driveway. The go pedal was quite resistant. Then when I would let off the rpm's came down kinda slow. When I got to work I open up the hood. Disconected the linkage and move the throttle lever back and forth just underneath the afc. That was fine. Then looked at where the linkage and throttle cable attach on that rocker. Don't know exact name. Just called it rocker. Has a spring on the shaft to. Well that thing was definatly rusted pretty bad. Also was really stiff to rock back and forth. So I sprayed some penatrating fluid on it. When I got home this morning I flushed it out. Then dropped a few drops of motor oil around the shaft hoping it would loosen the rocker up. It worked. Think I'll give it a drop of oil at every service interval.