Thread: Hissing Sound
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Old 02-02-2001, 05:20 PM
420SEL 420SEL is offline
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Join Date: Jul 2000
Location: Toronto, CANADA
Posts: 1,193

I did the test you mentioned, had my wife in the car with it running and had her lock and unlock the doors several times with no change in the hissing. It must be the fuel pump as others have suggested.

Jason Priest
1999 E430
1995 E420 - retired
1986 420SEL - retired
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