I have a 1999 Bonnie with a normally asperated 3.8L V-6. At various times while stopped at a light or stop sign, and in parking lots, any time you go from idle (foot off of the accelerator) and to just a slight off idle condition the accelerator does not want to go down. This happens also with the engine off and trying to move the linkage at the throttle body. Throttle plate sticking in throat of throttle body????