Thread: 95 e320 funny idling sound
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Old 11-18-2002, 01:56 PM
suginami suginami is offline
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Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,538
The whinning sound you are hearing is the air injection pump, which runs for about a minute on cold start-up.

This is normal. The pumps are very very loud.

Save your money. The pumps cost over $1,000. Do nothing.
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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