1. When starting from a dead stop, '94 Voyager hesitates, then goes with a jerk (when the engine is cold). Trans was replaced 6 months ago. Just got new timing belt and radiator leak fixed to correct problem of dying on the highway. Is the hesitation & jerking due to a transmission problem, timing belt, fuel pump ...? 2. I'm on the highway - then slow down to make a left turn or u-turn. The van jerks with a jolt as if hit from behind. Any advice would be appreciated!