I finally chased down by rough idle problem this weekend now I am on to my next problem LOL. Anyway here are my symptoms. When car ****s gears at low speeds (AOD) I feel like a thump from under the car. It will also do this if say you come around a curve and have to let off the gas really quick because of another car in front of you. It is like the car bucks I have a set of energy suspension motor mounts and tranny mount that were installed this past summer so I don't think it would be my mounts. Just wondering if this could be a U-joint problem? Also if you let off of the gas coming down a steep hill you feel it buck a bit then a bit of a vibration.