’Whirring’ noise at 70MPH
Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 3 Series
Forum Discription: This forum will deal with any issues on the BMW 3 Series (E21, E30, E36, E46, E90, E91 & E92)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=16559
Printed Date: 10-May-2024 at 14:41
Topic: ’Whirring’ noise at 70MPH
Posted By: jonny 320is
Subject: ’Whirring’ noise at 70MPH
Date Posted: 12-April-2005 at 11:20
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I have an E30 320is with 120,000 miles on the clock with a 'noise' Its a sort of whirring/droning noise that is always there but reaches it peek at about 70MPH. I can't tell where it's coming from but i think its the rear of the car. I've had the wheel bearing changed and that done nothing. The garage i took it to said it might be the Diff going or prop shaft bearings, without actually changing the parts its difficult to say what it is. Has anyone had this problem before i start ripping my car apart and costing me a fortune! HELP! |
Replies:
Posted By: micky_h
Date Posted: 12-April-2005 at 15:40
It's the laccy band winding up  I would say it's the diff.Get some one to drive the car while you have a listen about,might help you loacte where the noise is coming from exactly.
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Posted By: neileg
Date Posted: 13-April-2005 at 07:15
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If you are sure it's not a wheel bearing, I'd supect the diff. E30 diffs are often noisy. You could try draining the oil and trying a synthetic. Won't be cheap, but cheaper than a new diff! ------------- Cheers, Neil |
Posted By: Madrab
Date Posted: 13-April-2005 at 09:19
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Good rule of thumb that I use is, if the droning disappears when you take the power off and coast then it would point towards the drivetrain, Propshaft bearing, diff. If it continues to drone after the power is removed then I would consider checking the wheel/drive shaft bearings. As Neil says, if the wheel bearings are ok then probably the diff and an oil change may help. Rob ------------- 1990 E3o 325i Touring and she's definately a she! Pain in the ass sometimes but goes like a bunny :oD |