Question about 1999 BMW 318 ti

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There is a humming noise from the rear of my BMW 318Ti at around 2000rpm, which disappears at around 3000rpm. I suspect the rear diff and have changed the oil, but it makes no difference. I also checked the rear wheel bearings and they seem fine.

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Check the wheel bearings

Posted on Sep 03, 2009

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I have a 1972 bmw automatic Bavaria with 1975 3.0si engine Differential makes noise.


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diff noises indicating bearing problems are a whine on drive or coasting , an growl on deceleration and a harmonic whine or growl when the vehicle is held at steady speed Other than those indications , I would be more inclined to suspect wheel bearings and brake associated noises
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Hi my I own a 2002 ford explorer that have a humming noise from the back axle. Also I have a rattling in my engine any help


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