I have a 2006 RL with 187,xxx I just took it to my mechanic and he replaced all 4 motor mounts, the front, back, side, and transmission mount.
Before replacing them, the it was very smooth and you could not even tell the car was running. The new mounts got rid of the occasional clunking noise and the motor no longer jumps when shifting through gears. The old mounts were broken.
But now, after new mounts, it vibrates when in D with the foot on the brake. It vibrates enough that I can hear a buzzing and it makes my glove box rattle. You can't see the steering wheel shake, but you can definitely feel it. As soon as I accelerate or take my foot of the brake, the vibration is gone. Any other gear it idles extremely smooth.
My mechanic is telling me its normal. I asked him why it didn't vibrate before and his theory is that the old mounts were squished so the motor could not vibrate and now with the new rubber on the new mounts, the motor now has room to vibrate. He also said that its common for older cars to vibrate with high mileage.
Mounts are all OEM from the dealer, minus the rear one, it is aftermarket. I am taking it back to my mechanic so he could check it out again. But he said there probably not much he can do.
Any suggestions on what it could possibly be?
Before replacing them, the it was very smooth and you could not even tell the car was running. The new mounts got rid of the occasional clunking noise and the motor no longer jumps when shifting through gears. The old mounts were broken.
But now, after new mounts, it vibrates when in D with the foot on the brake. It vibrates enough that I can hear a buzzing and it makes my glove box rattle. You can't see the steering wheel shake, but you can definitely feel it. As soon as I accelerate or take my foot of the brake, the vibration is gone. Any other gear it idles extremely smooth.
My mechanic is telling me its normal. I asked him why it didn't vibrate before and his theory is that the old mounts were squished so the motor could not vibrate and now with the new rubber on the new mounts, the motor now has room to vibrate. He also said that its common for older cars to vibrate with high mileage.
Mounts are all OEM from the dealer, minus the rear one, it is aftermarket. I am taking it back to my mechanic so he could check it out again. But he said there probably not much he can do.
Any suggestions on what it could possibly be?