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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 06-19-2014, 04:40 AM
320sean 320sean is offline
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Location: Ireland
 
Join Date: Jun 2014
Posts: 7
Mein Auto: E90 320d
help!!! what is that noise????

hi guys,newbie on this forum,
bought 320d e90 couple a weeks ago and now i noticed some strange noise coming from air intake system when i push and release accelerator,cant upload file here but here's the link from youtube




thanks a lot everyone_a_
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  #2  
Old 06-19-2014, 08:51 PM
sptt144 sptt144 is offline
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Location: Orange County, Ca.
 
Join Date: Aug 2012
Posts: 1,026
Mein Auto: 2009 335i
Is it the bicycle card sound or the high pitched wine that you are referring to?
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Old 06-20-2014, 02:27 AM
320sean 320sean is offline
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Location: Ireland
 
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Mein Auto: E90 320d
is there high pitched wine as well?
i was just referring to noise that appears after engine revs down
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  #4  
Old 06-20-2014, 01:21 PM
fdriller9 fdriller9 is offline
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Location: NJ/Philly
 
Join Date: Oct 2006
Posts: 2,862
Mein Auto: '06 AW 330xi
Remove the airbox and see if it continues to do this.

It's ok to run the engine with the airbox disconnected temporarily

If you unplug the maf, it will run rough at first
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  #5  
Old 06-21-2014, 02:54 AM
320sean 320sean is offline
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Location: Ireland
 
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Mein Auto: E90 320d
can't remove the air box completely,looks like it's part of rocker cover,
took the air filter out and it had the same noise
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  #6  
Old 06-21-2014, 11:05 PM
sptt144 sptt144 is offline
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Mein Auto: 2009 335i
I heard that then. Doesn't sound normal.
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