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      03-11-2014, 05:16 PM   #2
tmarshall57
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Drives: E90 330d
Join Date: Apr 2008
Location: Bury, Lancs, UK

Posts: 452
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Mine makes a similar sound at low speeds - frequency proportional to engine speed. I think my issue is worn belt tensioners on the serpentine belt. I plan to replace belt, idler and tensioner during the next few weeks.
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e90 330d, Montego Blue, Beige Dakota Leather, Auto, Nav Pro, Bluetooth Prep, BMW Connected Drive, Voice Control, Sports Seats, Split Rear Seat, 18" Ellipsoid Wheels Style 162 Burr Walnut Trim
tmarshall57 is offline   United Kingdom
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