Intermittent noisy interior fan motor

xflyerwdavis · 11-17-2014, 10:04 AM

I have a 2008 BMW 328I and periodically it sounds like someone is sticking a pencil in the fan blades of a fan. Can anyone tell me what is going on; it just started this a week or so ago.
Regards
Walter
retflir@gmail.com

Welcome to NBA Jam · 11-17-2014, 10:06 AM

Debris is in it. Remove the fan motor and clean it out. It's also a good idea to lubricate the fan bearing at the base of the motor.

bob.g · 11-17-2014, 10:35 AM

you can try cleaning, that might work. mine does it too but ill probably just replace it eventually. Anyway her's a writeup on how to access it. http://upgr8s.blogspot.ca/2011/11/bm...r-service.html

bhmax16 · 11-17-2014, 10:49 AM

Not necessarily caused by debris. The fan motors are a common issue in these vehicles due to moisture that gets in from the windshield cowl area and kills the bearing. Mine made a sound similar to what you describe, but only when cold and when going around a corner (placing lateral force on the bearing). I replaced the motor nearly 2 years ago and it has been fine ever since. It's literally a 10 minute job.

canny714 · 11-28-2014, 12:54 AM

Quote:

Originally Posted by bhmax16

Not necessarily caused by debris. The fan motors are a common issue in these vehicles due to moisture that gets in from the windshield cowl area and kills the bearing. Mine made a sound similar to what you describe, but only when cold and when going around a corner (placing lateral force on the bearing). I replaced the motor nearly 2 years ago and it has been fine ever since. It's literally a 10 minute job.

Anyone know how much the fan costs if I wanted to replace it? Anyone is SoCal that help me do this?

mike3000fl · 11-28-2014, 01:51 AM

probably a leaf. you may want to make sure you actually have a microfilter and that someone didnt remove it.

11-17-2014, 10:04 AM	#1
xflyerwdavis Registered 0 Rep 1 Posts Drives: BMW 328I Join Date: Nov 2013 Location: jacksonville Florida iTrader: (0)	Intermittent noisy interior fan motor I have a 2008 BMW 328I and periodically it sounds like someone is sticking a pencil in the fan blades of a fan. Can anyone tell me what is going on; it just started this a week or so ago. Regards Walter retflir@gmail.com
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11-17-2014, 10:06 AM	#2
Welcome to NBA Jam Is it the shoes!? 3884 Rep 5,112 Posts Drives: (Sold) 2011 E92 335i ZMP 6MT Join Date: Mar 2014 Location: USA iTrader: (1)	Debris is in it. Remove the fan motor and clean it out. It's also a good idea to lubricate the fan bearing at the base of the motor.
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11-17-2014, 10:35 AM	#3
bob.g Captain 21 Rep 677 Posts Drives: 2006 325xi Join Date: Sep 2009 Location: montreal iTrader: (1)	you can try cleaning, that might work. mine does it too but ill probably just replace it eventually. Anyway her's a writeup on how to access it. http://upgr8s.blogspot.ca/2011/11/bm...r-service.html
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11-17-2014, 10:49 AM	#4
bhmax16 Lieutenant 164 Rep 401 Posts Drives: '22 M4, '23 CX-50 Join Date: Jul 2011 Location: North Carolina iTrader: (0)	Not necessarily caused by debris. The fan motors are a common issue in these vehicles due to moisture that gets in from the windshield cowl area and kills the bearing. Mine made a sound similar to what you describe, but only when cold and when going around a corner (placing lateral force on the bearing). I replaced the motor nearly 2 years ago and it has been fine ever since. It's literally a 10 minute job.
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11-28-2014, 01:51 AM	#6
mike3000fl Banned 138 Rep 2,731 Posts Drives: 06 330i Join Date: Feb 2010 Location: Tampa iTrader: (0)	probably a leaf. you may want to make sure you actually have a microfilter and that someone didnt remove it.
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