why dont you trade me your car for my coupe straight across?
No, well one time I was driving home in the snow and it was really cold out like -10 or so, and the spedometer cable started to sound like a jet engine where it was like hitting the outside walls of the cable shielding....maybe its that. Take the spedo cable out and go for a drive. Sometimes noises sound from the rear but they are really from the front.
I know you have been having trouble with your differential. Well sometimes over time the pinion gear and the spur gear dont have the right "timing" and they make a clashing noise, usually a higher pitch ringing because the pinon strikes the spur at the wrong angle and it will create a humming noise. Maybe thats it. I wish I recorded it when my car did it. I just replaced the rear end.
I hope this helps tom,
No Benzes in the stable at the moment, but itching for one again.
Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 300E Amg Hammer 88k mi sold
1992 500E 156k mi sold