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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Whine in engine compartment



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      12-04-2014, 05:13 PM   #1
CharlieBear
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Whine in engine compartment

I have a whine noise coming from under the hood. I have no clue where it's really coming from since I am driving. It only is apparent when I am driving straight and turning. Not big but at time it is noticeable.

Possibilites are:
transmission bearings?
streering of some sort?

I know it's hard without telling you what kind of whine or where it's exact location is. Any insight would be helpful.
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      12-04-2014, 05:25 PM   #2
NGEE
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Do you know the whereabouts of your wife?

haha, seriously, let's start with what kind of car you have, aside from white on red. Year? Model? Mods?
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      12-04-2014, 05:46 PM   #3
CharlieBear
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Quote:
Originally Posted by NGEE View Post
Do you know the whereabouts of your wife?

haha, seriously, let's start with what kind of car you have, aside from white on red. Year? Model? Mods?
LOL, no wife possibly my gf in there.
2008 335i. No mods.
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      12-04-2014, 06:54 PM   #4
10splaya22
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Check the exhaust bearings, they may be going out.
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      12-04-2014, 07:03 PM   #5
NGEE
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Also, clarify what you mean by: "It only is apparent when I am driving straight and turning"

That seems to indicate "all the time".
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      12-10-2014, 03:42 PM   #6
CharlieBear
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it's off and on randomly when I first start driving it esp. when accelerating not just turning. If I drive it for awhile it's not apparent. Once I shut it down and come back for it then it's really audible.

seems like this guy has the same problem..

http://www.e90post.com/forums/showth...ighlight=whine
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      12-10-2014, 03:49 PM   #7
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I would also suggest checking belt driven accessories. Ac compressor pulley, power steering fluid and pulley, belt idle tensioner and pulley.

Could just be low on power steering fluid.

Try driving without the Ac button lit, see if it still makes the noise.
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      12-10-2014, 04:12 PM   #8
ThatRWD
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Possible air/gas leak somewhere?
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      12-10-2014, 04:23 PM   #9
moosebrew
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I had whining from the same area on my old E46. It was the AC compressor bearing.

I also had a crack in the air intake boot which made a light whistle.
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      12-10-2014, 05:27 PM   #10
CharlieBear
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thanks for the suggestions. I never put on the AC really. Going to an indy shop soon and see what they say.
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      12-10-2014, 06:45 PM   #11
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Quote:
Originally Posted by CharlieBear View Post
thanks for the suggestions. I never put on the AC really. Going to an indy shop soon and see what they say.
Keep us posted
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