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      01-22-2012, 07:25 PM   #5
hotrod2448
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Drives: F80 M3, F10 535i
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Location: Charlotte, NC

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2011 335d  [0.00]
Are you talking about the electric pumps in the cell or the mechanical pump under the hood?

Either way I wouldn't be so sure it's the fuel pump you are hearing. There are quite a few cooling fans for every thing from control modules to the ECU in these cars that you may be hearing.
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