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Thread: whining noise when you let off the gas.?

  1. #1
    Join Date
    Nov 2017
    Location
    Minnesota
    Posts
    2
    My Cars
    325XI

    whining noise when you let off the gas.?

    There is a very odd noise coming from the front end of my 2001 325xi. I have a whining type sound that appears only when i left off the gas and coasting. When I hit the gas the whining decline sound stops and it sounds like a normal car speeding up. I only have 130k on it and it is an automatic. Any ideas on what it can be..?

  2. #2
    Join Date
    Jan 2009
    Location
    Chicago, IL
    Posts
    431
    My Cars
    2001 330i and 2005 330i
    Transfer case? Water pump? Alternator? Clutch fan coupling? A/C compressor?
    When was the last service on any/all of these? Something that moves when the car is running will be the culprit here. Go wiggle the components or put a stethoscope on them while running. Find an enclosed area like a parking garage and roll down all the windows and turn off the radio...
    Johnny Murray

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