Humming oscillation sound from power train

007_e350 · 01-03-2014, 06:38 PM

So at exactly 70 mph in D I get a sinosidal of hmmmmmm ............. hmmmmmmmm ............. hmmmmmmmm ....... Pretty annoying ..... No loss of power and it doesn't happen above or below this speed or in S mode..... I recently changed my filter only coz I didn't do it with the last oil change 1500 miles ago is the only thing I did recently .... Car is walnut blasted and stock ..... Tranny flushed, differential flushed

marcvtec · 01-03-2014, 07:00 PM

This is in the top Gear? Final drive?
If so could be the drive shaft is out of balance.

007_e350 · 01-03-2014, 07:08 PM

Quote:

Originally Posted by marcvtec

This is in the top Gear? Final drive?
If so could be the drive shaft is out of balance.

Sixth gear correct, how do I fix that

j1gilles · 01-04-2014, 09:42 AM

Tires are "saw toothed" or wheel bearings are shot.

007_e350 · 01-27-2014, 03:41 PM

Quote:

Originally Posted by j1gilles

Tires are "saw toothed" or wheel bearings are shot.

yup thats what it was ... somehow they removed & rebalanced and it went away ... or I stopped giving **** amymore lol

01-03-2014, 06:38 PM	#1
007_e350 Lieutenant Colonel 217 Rep 1,909 Posts Drives: 335i 2008 MHD'd / x5d E70 Join Date: May 2013 Location: left lane iTrader: (3)	Humming oscillation sound from power train So at exactly 70 mph in D I get a sinosidal of hmmmmmm ............. hmmmmmmmm ............. hmmmmmmmm ....... Pretty annoying ..... No loss of power and it doesn't happen above or below this speed or in S mode..... I recently changed my filter only coz I didn't do it with the last oil change 1500 miles ago is the only thing I did recently .... Car is walnut blasted and stock ..... Tranny flushed, differential flushed
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01-03-2014, 07:00 PM	#2
marcvtec Banned 407 Rep 2,704 Posts Drives: M5 Join Date: Oct 2006 Location: toronto iTrader: (0)	This is in the top Gear? Final drive? If so could be the drive shaft is out of balance.
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01-04-2014, 09:42 AM	#4
j1gilles Captain 51 Rep 719 Posts Drives: 2009 335xi Join Date: Feb 2013 Location: Chicago iTrader: (0)	Tires are "saw toothed" or wheel bearings are shot. __________________ ASE master tech (many moons ago)335xi- JB4 G5 iso/e50 custom flash/Custom meth/Borla mids/Custom x-pipe/DCI/ER charge pipe/Dual Ebay BOV's/Alpina B3 flash/Paddle shifter retro fit
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