I have a 1990 Bronco with a 302 and AOD trans. Recently, it started to buck once it shifts to 3rd gear, which happens to be at a very low MPH (between 25 and 30). Could it be that it is shifting too early? It does not do it all of the time ... it seems to happen more once the engine/tranny warms up. The RPMS are not affected, which leans towards the drive train, possibly. Has anyone else encountered such issues? There are no strange noises or such ... it bucks until the MPH gets up near 35 or 40 MPH then all is fine. Is there a way to change the shifting patterns on this Bronco? I am a new owner - since August and have had many issues with this truck. Me give up? No way! Any help is greatly appreciated...