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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 05-20-2012, 12:56 PM   #1
mattfarrington
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Join Date: Jan 2012
Location: Londonderry
Posts: 279
My Ride: 04 325xi
Weird noise 2004 325xi? (whistle)

So when my engine is running on idle, I hear a whistle, or a whine noise.

The video doesn't capture it very well, but when I'm looking at the right side of the engine, you hear it more.

Any ideas?

My brother said possibly the electric fan bearing.. No idea though..

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Old 05-25-2012, 09:11 PM   #2
JCByrdman
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Join Date: Dec 2011
Location: MA
Posts: 1
My Ride: 325Ci
I have the same "bird whistle" going on in my car (2003 325Ci) and have no idea. I hear it WAY more inside the car. Not sure yet but I plan on spending time trying to find out though.
Did a search and nothing came up yet.
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Old 05-30-2012, 03:22 PM   #3
reupgang
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Join Date: Feb 2011
Location: alameda
Posts: 46
My Ride: 2000 323i
I also get this whine/whistle from the right side when facing the engine.
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