High Frequency sound

jipettersen · 07-06-2010, 08:16 AM

I have this high frequency sound in my X635d coming up at around 60 kmt.
Sounds like turbo sound but it is not. This sound has a more or less constant frequency and you can hear it at around 60 kmt and up with no or little acceleration ( idle or slight running engine at 60+) and engine speed 12000 - 18000 prm.
I have had it for the last year but now i want to dig into it.

Any ideas?

ronald_adi · 07-06-2010, 01:38 PM

sounds like the fanbelt to me.

jipettersen · 08-28-2010, 01:51 PM

Quote:

Originally Posted by ronald_adi

sounds like the fanbelt to me.

My rear differential makeing this noise . Started 6 mth ago. Bearing gone i think.
BMW take this on warranty. Car has only 20 000 km on speedo.
This is the adaptive drive differential.

X6M · 02-24-2011, 08:57 AM

Sorry to revive an old thread, but where did you hear the noise coming from? Front or rear? I have had the same problem and I identify that the noise was coming from the front right wheel. Could be either a bearing or differential...

Sharpie12 · 02-24-2011, 02:21 PM

I wish my X6 can rev to 18000

07-06-2010, 08:16 AM	#1
jipettersen New Member 5 Rep 19 Posts Drives: X6 35d Join Date: May 2010 Location: Norway iTrader: (0)	High Frequency sound I have this high frequency sound in my X635d coming up at around 60 kmt. Sounds like turbo sound but it is not. This sound has a more or less constant frequency and you can hear it at around 60 kmt and up with no or little acceleration ( idle or slight running engine at 60+) and engine speed 12000 - 18000 prm. I have had it for the last year but now i want to dig into it. Any ideas?
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07-06-2010, 01:38 PM	#2
ronald_adi First Lieutenant 39 Rep 399 Posts Drives: X6 40d Join Date: Aug 2006 Location: Netherlands iTrader: (0)	sounds like the fanbelt to me. Last edited by ronald_adi; 07-06-2010 at 02:40 PM..
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02-24-2011, 08:57 AM	#4
X6M Private 5 Rep 80 Posts Drives: BMW X6M Join Date: Feb 2010 Location: London, UK iTrader: (0)	Sorry to revive an old thread, but where did you hear the noise coming from? Front or rear? I have had the same problem and I identify that the noise was coming from the front right wheel. Could be either a bearing or differential...
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02-24-2011, 02:21 PM	#5
Sharpie12 Lieutenant 65 Rep 507 Posts Drives: 2013 F10 M5 SG/SO Join Date: Aug 2009 Location: Chicago iTrader: (0)	I wish my X6 can rev to 18000
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