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Old 02-05-2001, 07:44 PM
Rocket Rocket is offline
Join Date: Jan 2000
Location: Indpls.,IN. USA
Posts: 84
I agree with the exhaust leak possibility. This a problem I've seen on many different cars, not just Mercedes. Look for black powder around the mating surfaces. The fan shroud idea is also worth a quick look. Power braking the engine with the hood raised might tell you all you need to know. Other than that I can only think of things like CV joints, or loose driveshaft disc bolts, but I think those would be there at all times. It sounds like temperature is the key, and that makes the exhaust leak my bet. Good Luck! Lets us all know what you find.
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