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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Fan that comes on at 45-60MPH



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      09-24-2012, 01:14 PM   #1
UncleWede
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Fan that comes on at 45-60MPH

This past weekend suddenly had a loud, fan-like rattle start while driving down the freeway. Randomly seemed to coincide with opening the window, but we've further determined that something starts about 45 (for wife) - 60 (for me) and is louder than the normal radio volume. It reminds me of putting a card in my spokes. Was cool back in the day, but not on my 325.

Any ideas on the location of a fan that might match this description? MAYBE it is just a leaf or something stuck in a fan blade
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      09-26-2012, 10:18 AM   #2
UncleWede
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Solution found: When the center of the strip on top of your windshield degrades enough that a section about 4 inches long comes out of the channel, it flaps in the wind at speeds above 45 MPH and sounds like a fan blade hitting something.

My neice's husband went for a ride with me and kept insisting the noise was from the area of the moonroof, not the center of the dash. He's sending my wife the bill to the tune of $699.95. But since I'm charging my niece $725.99 to set up her new computer, it's a relatively fair trade
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      09-26-2012, 10:27 AM   #3
onebadmofo
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Quote:
Originally Posted by UncleWede View Post
He's sending my wife the bill to the tune of $699.95. But since I'm charging my niece $725.99 to set up her new computer, it's a relatively fair trade
Nice family ties you got there
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