N55 humming noise

02-19-2014, 01:52 PM	#1
Amini77 Brigadier General 186 Rep 4,732 Posts Drives: Alpine White '13 550i Join Date: Nov 2011 Location: Tarzana, CA iTrader: (1) Garage List 2013 BMW 550i [0.00]	N55 humming noise What's this humming noise coming from my N55 535i?
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02-19-2014, 02:28 PM	#2
DesertBMW Banned 15 Rep 75 Posts Drives: 1996 328i with N55 engine Join Date: Aug 2013 Location: Phoenix AZ USA iTrader: (0)	water pump running full blast.
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02-24-2014, 11:53 AM	#3
Andrewe92 enthusiast 117 Rep 997 Posts Drives: 2011 e92 lci 335xi Join Date: Feb 2012 Location: NJ iTrader: (0) Garage List 2011 bmw 335 xdrive [10.00]	yikes
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02-24-2014, 02:30 PM

Amini77

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Originally Posted by DesertBMW

water pump running full blast.

Quote:

Originally Posted by Andrewe92

yikes

I was researching a lot of people say its the ECU fan?

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