BMW 2002 FAQ - 'whirring' sound

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Date: 5-13-08 02:47
From: BillyTheKid

Subject: 'whirring' sound

I've had a 'whirring' sound ever since I got the car and it's now starting to bother me. So, I come to you to seek advice...

At first I thought it was the center support bearing (which was in terrible shape) -- although after replacement the sound remains. Then my attention turned to the transmission, however when the engine was replaced I picked up a little-used tranny as well...no fixy there either. The sound is somewhere in the final drive of the car -- it is dependant on vehicle speed. Also when the passenger window is down I hear a 'tick--tick' noise (not rhythmic -- more intermittent) thus leading me to conclude that a wheel bearing might be the culprit. Does this sound right to you, or is it possibly my rear differential? The car drives fine and isn't giving me any indications of something coming apart -- so whatever it is isn't too critical for daily operation (its just getting annoying). Any information you might have would be much appreciated.

Cheers,
Bill

Date: 5-13-08 06:12 From: TobyB in Seattle Subject: Re: 'whirring' sound
Ride in the back seat and see if you can figure out which side. Click click is usually a bad hub and stub shaft, and whirring sounds like the diff. But I've had a rear bearing 'whirr'- more like 'sizzzz' hth, t _________________ I have a car disease. There is no cure. I'm not even managing the symptoms very well...

Date: 5-13-08 08:54 From: Beaner7102 in Melbourne, Australia. Subject: Re: 'whirring' sound
Rad fan? I replaced the fan when the old one got chewed out. the new one is the 400mm tropical one, it makes quite a whiring noise, compared to the old one. Just a thought. Beaner7102 _________________ 1971 - 2002 RHD VIN 1653940. Agave (stock with Pertronix & 32/36 Weber) - "Cactus" 1972 - 1602 RHD VIN 1554408. Fjord (with 2L motor, Weber 40/40 and 5speed - LSD to come) - "Bluey"

Date: 5-19-08 10:03
From: BillyTheKid

Subject: Re: 'whirring' sound

Beaner7102 wrote:

Rad fan? I replaced the fan when the old one got chewed out. the new one is the 400mm tropical one, it makes quite a whiring noise, compared to the old one. Just a thought. Beaner7102

I thought of the fan as well...but proved that theory wrong as well (the sound is dependant on vehicle speen not engine speed). Thanks for the thought though!

Cheers,
Bill

Date: 5-19-08 03:55
From: FunElan in SoCal-Manhattan Beach, CA

Subject: Re: 'whirring' sound

I have a sound like that, except it is only in first gear. It changes with the car's movement. I diagnosed it a while ago from the differential. It is a common problem on some 02's.
_________________
'68 Caribe 1600-1563167 (2/8/1968)-2.0 L, Cloth 320is Recaros, BBS Basketweaves, Custom Center Console
'69 1600 Voll Cabriolet
'69 Lotus Elan
http://farm3.static.flickr.com/2170/2655268992_e083ff0cbb.jpg?v=0

Date: 5-20-08 04:45 From: BillWilliams in Maryland Subject: tick tick - check brake pads
see if one of the four ride up a bit, then drop back into place. Sometimes they catch on a high spot on the rotor _________________ 1972 2000tii Touring 1972 2002tii with A4 system 1972 2002tii found a motor 16' Mad River

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