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BMW 3-Series (E90 E92) Forum
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"Humming noise" from the rear of the car
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11-01-2014, 12:51 PM | #1 |
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"Humming noise" from the rear of the car
Not every time but almost always (and has been getting slightly worse the past 10k miles) Every time I floor it at 2,000rpms or less I can hear a deep "hum" like sound coming from the rear. It only happens WOT below 2K rpms. Its a very faint "hum" so im not sure where to even start on diagnosing since there really is no other symptoms other than the humming below 2k at WOT. it... Anybody ever have this problem?
112,000 miles and climbing! |
04-13-2015, 09:20 PM | #2 |
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iv been getting the same humming noises from my 2011 335is from the rear cabin and always happens around 2k rpm and climbing and will usually cut off at 2.5k rpm or 3k rpm depending on the gear im on. have you been able to diagnois your problem?
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04-14-2015, 05:26 AM | #3 |
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Fat chick stuck in the back seat? Haven't noticed her?
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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04-14-2015, 09:40 PM | #5 |
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Exactly! No I haven't BUT I must say, it is nowhere near as bad anymore since getting it out of storage. I did a few maintenance things over storage one of them being diff fluid. I could not drain it (save that for another day) but I put in 1/4 quart because it was low and now it doesn't do it nearly as easy. Maybe if I actually drain the diff fluid and fill with fresh fluid, (115,000 miles) it would stop completely. How many miles are on your car?
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04-14-2015, 09:43 PM | #7 |
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