Originally Posted by Tpawlik

I recently replaced the all four sub-frame mounts, all three diff. bushings, shocks, rear diff. fluid and sway bar links. Car handles great now.
However, It sounds like I am being chased by a freight train.
It sounds like harmonic noise.
It is so loud it drowns out the radio.
It is not as loud when I let off the accelerator and it starts to go away above 80 MPH.
The only thing I see from the shop manual pics. that I did not do right was the shim on the front diff mount. It is supposed to be between the diff and the bottom of the two piece bushing. I have it on top of the sub-frame under the top bushing.
I am going to move it tonight.
Could this one piece being out of place be transmitting all this noise through the sub-frame and body?