I don't know. I'm confused now. I had my gf stand on the gas a few times with the hood up, and I saw no movement whatsoever. But with it in gear, and the weight of the car accelerating I suppose it could still be a mount.
Would it be something in the tranny. My thoughts are that if it were an axel or misbalanced wheel, that it would do it all of the time or at certain speeds. But that is not the case, it's at all speeds but just when I put the pedal to the floor.
