On my car, I have the noise that elegance is referring to, but my vacuum pump does not run. The car has made this noise since brand new, so if it is a problem, it was there when the car was built.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record