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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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  #1  
Old 10-07-2012, 02:38 PM
ubermax ubermax is offline
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Location: Connecticut
 
Join Date: Apr 2008
Posts: 204
Mein Auto: '08 Volvo S60, '97 Jetta
Question for MT Owners

lately in NewEngland it's been cool early am and so the windows are closed - quiet ; leaving our condo complex there's a slight downhill for a short time & while in neutral I hear what I can only best describe as a very quiet downshift type sound - definitely not tire or so called road noise.

if anyone has a few moments to spare and could try this with their MT in neutral , I'd be interested in hearing the outcome - just wondering if it's normal BMW or not .

by way of comparison we also have an old '97 VW Jetta and in a similar test we only hear tire , i.e road noise.

thanks in advance for anyone that gives some feedback on their experience - BTW it's an '08 X3.
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  #2  
Old 10-08-2012, 07:05 PM
kenza kenza is offline
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Location: Santiago, Chile
 
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Mein Auto: 2007 X3 2.0d MT
Hi! Might be differentials....
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  #3  
Old 10-09-2012, 08:33 AM
ubermax ubermax is offline
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Mein Auto: '08 Volvo S60, '97 Jetta
thanks Kenza , in your opinion from what I described , does it sound like a normal differential sound or an indication of a differential needing service ? the X3 has 75k - and as an aside would you know if a '97 Jetta with front wheel drive has a differential ?
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  #4  
Old 10-09-2012, 10:31 AM
timfitz63's Avatar
timfitz63 timfitz63 is offline
MT = Doppler Shifting
Location: Lorena & San Antonio, TX
 
Join Date: Aug 2010
Posts: 858
Mein Auto: 2007 X3 (MT)
I haven't heard the sound you're describing with my '07 -- but I also haven't been driving it under the conditions you specified; I don't generally shift into neutral / hold the clutch in during downhill runs. Will try to remember to check the next time I've got it out, but that may be a while...

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Originally Posted by ubermax View Post
... as an aside would you know if a '97 Jetta with front wheel drive has a differential ?
Typically, no front-wheel drive cars have a differential, per se; they rely on a transaxle, which combines the function of a transmission, drive axle, and differential.
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X3 w/6-speed & Sport Package:
A sports sedan disguised as an SUV...
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  #5  
Old 10-09-2012, 12:53 PM
ubermax ubermax is offline
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Location: Connecticut
 
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Mein Auto: '08 Volvo S60, '97 Jetta
thanks TimFitz, neutral with the clutch out is fine for this test , if it's in say 1st gear then the sound I'm hearing wouldn't be isolated --- also if the windows are open with alot of outside noise it's hard to zone in on this sound , and it only takes maybe 5-10 seconds coasting on a downgrade to hear it , and again it's sort of like a down-shift sound but much quieter .

thanks again and that's good info wrt front wheel drive and explains why we don't hear that sound with our MT Jetta in neutral on a downgrade .

Don

Last edited by ubermax; 10-10-2012 at 04:41 AM.
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  #6  
Old 10-11-2012, 09:02 PM
kenza kenza is offline
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Mein Auto: 2007 X3 2.0d MT
Quote:
Originally Posted by ubermax View Post
thanks Kenza , in your opinion from what I described , does it sound like a normal differential sound or an indication of a differential needing service ? the X3 has 75k - and as an aside would you know if a '97 Jetta with front wheel drive has a differential ?
Don, there is no way I could tell anything without hearing it, but if that sound is the only problem you have, I think you should be ok. If you hear it only under these conditions, its ok.

Cheers!
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  #7  
Old 10-12-2012, 03:25 AM
ubermax ubermax is offline
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Mein Auto: '08 Volvo S60, '97 Jetta
Ok, I'll go with that , thanks again for your time Kenza & also TimFitz63 !!!!!!
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