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Old 06-06-2004, 11:01 PM
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///M Rakete ///M Rakete is offline
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Location: Southern California, USA
Join Date: Apr 2002
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Mein Auto: 2010 M3 and 2011 135i
Originally Posted by eVal
On my 02 I notice that there is a deep humming noise upon start up that will last a minute or two. I thought it was especially evident when the engine is cold, but now that I reflect on it I'm thinking it comes up regardless.

Its not me or the passenger humming, so does anyone have an idea what this sound is, if its normal or something to look into?
Also check your power steering fluid level. It might be a bit low causing the pump to cavitate a bit but once it expands on heating it goes away. Admittedly a wild ass guess.
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