So recently my car has had some kind of vibration going on under acceleration. When I give more than 1/2 throttle (usually most notable @ low rpm) I can feel a thudding through my steering wheel and through my pedal. At first I thought it could be engine knock, and got really scared, but the more and more I drive it the less I think that's whats going on. I found that sometimes if I stop and wiggle arround my spark plug wires that it helps (but this could be completely psychological or a fluke). Recently I started thinking it could possibly be a shot wheel bearing or an unbalanced tire. Given this info can anyone offer a better diagnosis? -oh yeah btw, I don't have a CEL or anything, and I was autoxing last weekend and it felt fine.