I have a 94 Nissan Quest that started shifting rough and then started making a lot of excessive noise when driven. I found that both the left, front engine mount and the right, front transaxle mounts were broken. I replaced both mounts and the rough shifting definitely stopped, so that problem seems fixed.
However I am still getting some excessive noise and vibration when driving the car. When I replaced the mounts, I made sure that the engine weight was back on the mounts before the final tightening as the manual indicated. Is there anything else that should have been done in terms of installing the new mounts? Or could the bushings or something else been damaged when the mounts broke? Is there anything else that should be checked to find the source of the noise and vibration? Thanks, Jim