A mount has a rubber cushion that can go bad allowing metal to metal contact; thus you feel drive line vibration throughout the car. That would be my guess. Here is a test you can try.
Put the park brake on, open the hood, and start the engine. Next, have a helper put his foot securely on the brake and put it in drive and give it a little gas. Watch to see if the engine lifts excessively, More than an 3/4 inch is excessive. Also try it in reverse. If the engine seems to lift more than I mentioned, check the mount responsible for that area.
Let me know what you find. Also, don't stand in front of the car. You never know if the helper is mad at you. (LOL)
Wednesday, October 24th, 2018 AT 5:34 PM