Hello,
I am having trouble diagnosing a problem I've been having on a 1987 325i. Nothing I've read or listened to matches the noise I'm hearing, which why I am now starting this thread...
The noise is hard to explain... The noise is oscillating relative to the speed of the car and by that I mean the volume of the noise quickly rises and falls. It is more of a whirring noise, like something is off center. Slight vibration some times accompanies the noise. Sounds like it is coming from the rear center or rear right (passenger side) of the car.
It initially started ~2months ago and would only occur under very hard left-hand cornering and would occur more frequently with throttle being applied. Recently is has been happening more frequently on left-hand turns and it now some times occurs even while going straight at high speeds (+60mph).
I had first thought it was the right axle, so I replaced that with a new one (GKN) and threw on a new rear bearing too. Also, over the past year I've basically been refurbishing the car: front and rear suspension bushing and ball joint all replaced, front wheel bearings, drive-shaft guibo, new fluid in LSD, axle-diff bolts, diff mount, transmission mounts, engine mounts, etc.
I still need to take a closer look at the drive-shaft bearing and u-joint, but it seems odd that the noise would only start occurring on left-hand turns and not right-handers too. I'm also worried it may be related to one of the differential output shafts.
Does this sound like something anyone else has dealt with?
Thanks!
I am having trouble diagnosing a problem I've been having on a 1987 325i. Nothing I've read or listened to matches the noise I'm hearing, which why I am now starting this thread...
The noise is hard to explain... The noise is oscillating relative to the speed of the car and by that I mean the volume of the noise quickly rises and falls. It is more of a whirring noise, like something is off center. Slight vibration some times accompanies the noise. Sounds like it is coming from the rear center or rear right (passenger side) of the car.
It initially started ~2months ago and would only occur under very hard left-hand cornering and would occur more frequently with throttle being applied. Recently is has been happening more frequently on left-hand turns and it now some times occurs even while going straight at high speeds (+60mph).
I had first thought it was the right axle, so I replaced that with a new one (GKN) and threw on a new rear bearing too. Also, over the past year I've basically been refurbishing the car: front and rear suspension bushing and ball joint all replaced, front wheel bearings, drive-shaft guibo, new fluid in LSD, axle-diff bolts, diff mount, transmission mounts, engine mounts, etc.
I still need to take a closer look at the drive-shaft bearing and u-joint, but it seems odd that the noise would only start occurring on left-hand turns and not right-handers too. I'm also worried it may be related to one of the differential output shafts.
Does this sound like something anyone else has dealt with?
Thanks!
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