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Old 02-17-2001, 05:28 PM
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I have a 1992 500 SL with 110,000 miles. When I first start the car and the engine is cold, I will occasionally hear a high pitched whining sound when I depress the accelerator, even with the transmission in neutral. This sound seems to come from the front of the engine.

After the engine has warmed up I will still occasionally hear the same high pitched whining sound but only when the transmission shifts gears and the sound seems to be coming from the transmission. Any ideas as to cause?
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Old 02-17-2001, 05:49 PM
engatwork's Avatar
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 11,949
is the alternator

original? The E320 was making a good bit of noise (at around 93k miles) and come to find out it was the rear bearing in the alternator.
'95 E320
'97 CRV
'85 300D turbo
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