Jeepkid8037 said:I had the same problem. Put your car in drive, have a body look at the motor, and hold the brake firm and give it a good punch. If its the motor mount then you should hear the noise or your friend should see the motor jump up a significant ammount.
If its not that i would guess trac bar. Check both sides.
That is the worst idea ever!! DON"T DO IT!!!! you can get the same result with the motor in park if you are looking to see if the mounts are bad. Doing that test in drive is just asking to wreck your XJ or hurt your buddy.