« on: February 15, 2011, 11:26:15 PM »
Just for closure, it was the throttle body. While I doubt many, if any, others will have the same problem, the problem was the throttle plate getting stuck on the throttle body. As it opened it moved slightly off center, then when it closed it rubbed against the throttle body, wearing a small indentation into the throttle body, and got stuck. For some reason, it only happened while driving. I could move it back and forth by hand and it would never happen. I fixed it by adding a spacer (a thin washer I pounded out of a loop of wire) around one end of the throttle plate shaft. It keeps the throttle plate from moving off center. Hopefully it won\'t fall off.
fishexpo101, thanks for all the help!