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Fan Noise in Cabin ? Fan Noise in Cabin ?
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  #1  
Old 12-04-2009, 01:13 PM
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Fan Noise in Cabin ?
2005 4.8 - 35,000 mi
Sitting at idle, just noticed a " fan " noise ??. Is very faint, and seems to cycle low speed / hi speed. I guess it could also be a pump of some sort?
Any ideas ???
thx.
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Old 12-04-2009, 06:29 PM
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Could it be the fuel pump....?

In case, it would be kinda whining, and should be louder on the right side in the backseat.....
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Old 12-04-2009, 10:19 PM
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Quote:
Originally Posted by britcon View Post
2005 4.8 - 35,000 mi
Sitting at idle, just noticed a " fan " noise ??. Is very faint, and seems to cycle low speed / hi speed. I guess it could also be a pump of some sort?
Any ideas ???
thx.
mine does the same...
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Old 12-05-2009, 01:44 AM
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Quote:
Originally Posted by NY98M3 View Post
mine does the same...
Me too. I wish I knew where I could spray some lub, so it will go away. It's been there for years.
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Old 12-05-2009, 09:05 AM
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I have the same issue. Spoke to my mechanic and he said it could be the blower motor or a resistor starting to go.
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Old 12-05-2009, 12:07 PM
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I had brought mine in under warranty and they told me it was 'normal'.
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Old 12-07-2009, 12:16 PM
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Thanks guys .....guess I can rest my paranoid self for a few days...
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Old 12-07-2009, 12:22 PM
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Could it be the air pump for the self leveling suspension?
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Old 12-07-2009, 12:55 PM
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It's the Control Unit Box fan, #4 on the diagram. It moderates the temperature in the box by blowing cabin air though it from the driver's footwell area.
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Old 12-07-2009, 01:11 PM
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Question answered !..thanks rayxi. So.....the fan noise is " normal ", and just something my hearing has become sensitive to, or is it indicative of a future problem ?
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