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X5 E53 (1999 - 2006)
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  #1  
Old 01-19-2013, 06:02 AM
Buzz110 Buzz110 is offline
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Mein Auto: 2006 BMW X5 4.8is
Loud Bang During Hard acceleration

I have a 2006 X5 4.8is. During a hard acceleration from a stopped or rolling position my vehicle sometimes makes a load bang noise emitting from the rear. I have recently replaced the subframe bashing with polyurethane ones and also two rear differential bushings. Does anyone have any other suggestion? Are there any other common problems that I can look into?
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  #2  
Old 01-19-2013, 12:30 PM
TechWrench TechWrench is offline
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Location: Glenville, NY
 
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Mein Auto: '99 540i, '02 X5 3.0i
Quote:
Originally Posted by Buzz110 View Post
I have a 2006 X5 4.8is. During a hard acceleration from a stopped or rolling position my vehicle sometimes makes a load bang noise emitting from the rear. I have recently replaced the subframe bashing with polyurethane ones and also two rear differential bushings. Does anyone have any other suggestion? Are there any other common problems that I can look into?
Do a search on it, but it sounds like it could be the main drive chain inside the transfer case. It is a known problem with these chains stretching with time, and under acceleration they jump a tooth on the sprocket, making the noise.
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  #3  
Old 01-21-2013, 06:01 AM
Buzz110 Buzz110 is offline
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Mein Auto: 2006 BMW X5 4.8is
Thanks I will definitely check that out.
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  #4  
Old 01-21-2013, 10:05 AM
HPIA4v2 HPIA4v2 is offline
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Mein Auto: E60, E71, E92
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Originally Posted by Buzz110 View Post
Thanks I will definitely check that out.
2006 X5 uses XDrive, no longer has chain in xfer case (those are for pre 2004 X5).
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  #5  
Old 01-21-2013, 03:10 PM
TechWrench TechWrench is offline
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Location: Glenville, NY
 
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Mein Auto: '99 540i, '02 X5 3.0i
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Originally Posted by HPIA4v2 View Post
2006 X5 uses XDrive, no longer has chain in xfer case (those are for pre 2004 X5).
Thanks, i have an '02, and didn't know about the change.
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  #6  
Old 01-23-2013, 06:58 AM
Buzz110 Buzz110 is offline
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Mein Auto: 2006 BMW X5 4.8is
Any other suggestion then.
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  #7  
Old 01-23-2013, 09:25 AM
HPIA4v2 HPIA4v2 is offline
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Mein Auto: E60, E71, E92
The common problem with X5 6-sp is bang noise during tak-off or stopping (like being rear ended from behind), dealer usually re-program the trans to smooth that transition.
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