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      12-10-2012, 06:47 PM   #661
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Quote:
Originally Posted by Pseudo Nim View Post
Have you scanned the car to see if any codes are being thrown, just out of curiosity?

When my diff went, I had a Christmas tree of lights of all sorts, and the car was making crazier sounds than a gang of leper cats on a diet, but I guess you're nowhere as far gone.
only codes are the brake lights cuz my sensor's burnt
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      12-10-2012, 07:50 PM   #662
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Hopefully it's nothing serious George. Since it's coming from the rear, did you try to raise it and rotate the rear wheel? Assuming you put it in neutral and removed the ebrake?
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      12-10-2012, 10:38 PM   #663
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      12-11-2012, 05:00 PM   #664
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*update*

so i checked if there is any rubbing with wheels mounted and weight on suspension

here are pics:

Left tire turning left




Right tire turning right - less space than the other side...maybe correlating with the increased sound I am hearing when turning right?





Do you think this is the problem? It seems like it would be to me. Also, can I keep running these tires? I am running 12mm spacer, without which I cannot clear brakes. They are completely new. I don't want to spend on 2 new front tires. Next change I will downsize to 235 fronts (245 now). never had this issue with the vredesteins though...maybe they're made narrow? These are Dunlop 3ds
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      12-11-2012, 08:36 PM   #665
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Quote:
Originally Posted by GewoW View Post
*update*

so i checked if there is any rubbing with wheels mounted and weight on suspension

here are pics:

Left tire turning left


Right tire turning right - less space than the other side...maybe correlating with the increased sound I am hearing when turning right?


Do you think this is the problem? It seems like it would be to me. Also, can I keep running these tires? I am running 12mm spacer, without which I cannot clear brakes. They are completely new. I don't want to spend on 2 new front tires. Next change I will downsize to 235 fronts (245 now). never had this issue with the vredesteins though...maybe they're made narrow? These are Dunlop 3ds
this is completely possible. even though two tires are the same size, there are slight variations between different brands and makes of tires. i am guessing the sizing that you are running with the old vreds was very close to rubbing and the new dunlops have put it over the edge... were you hearing the same sound before changing to winter tires ?
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      12-11-2012, 08:58 PM   #666
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Quote:
Originally Posted by montreal red View Post
this is completely possible. even though two tires are the same size, there are slight variations between different brands and makes of tires. i am guessing the sizing that you are running with the old vreds was very close to rubbing and the new dunlops have put it over the edge... were you hearing the same sound before changing to winter tires ?
no i didnt!
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      12-11-2012, 10:07 PM   #667
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*update2*

So i don't think its the tires....I have applied some painters tape on the part with closest proximity to the tires, bilaterally. Drove around, made sure i heard the sound. Then checked them. Clear:

LEFT



RIGHT (side where tire is closest)
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      12-11-2012, 10:25 PM   #668
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This sounds a lot like the issue:

Quote:
This Service Information bulletin supersedes SI B33 01 02 dated February 2008.

SUBJECT
Grinding Noise from the Differential during Slow Cornering

MODEL
E46 M3 from start of production

E60 M5 from start of production

E63, E64 M6 from start of production

E90, E92 and E93 M3 from start of production

SITUATION
A grinding noise may be heard coming from the differential during slow cornering.

This noise is best heard during tight cornering situations.
For example : while parallel parking, driving in a tight circle, etc.

CAUSE
When the rear wheel speed differential varies during tight cornering, a slip stick effect is created on the lining and steel discs incorporated in the differential locking clutch, causing the grinding noise.

This noise typically goes away as the locking clutch discs in the differential are broken in.

The break-in time varies depending on driving habits.
For example : tighter cornering (working the locking clutch) means that it takes less time to break in the locking clutch discs.

CORRECTION
If a complaint is verified as described above on the E46 M3; E60 M5; E63 and E64 M6; or on the E90, E92 and E93 M3 vehicles, the differential oil should be replaced with a specially formulated differential oil, BMW part number 83 22 2 282 583.

Road test the vehicle. (the part I hate the most and every other technician.perhaps most of them skip this part.I would rather give you the option to perform this or at least inform you of this procedure.)

With the vehicle at operating temperature
Drive in tight circles (20 circles in each direction), allowing the special oil to coat the locking clutch discs.

The grinding noise will decrease when the locking clutch discs are sufficiently coated. Some slight noises may still be heard after driving in tight circles. Its necessary to drive the vehicle up to 600 miles before all noises are eliminated as stated by the manufacturer.

Note: Vehicles that have had the differential oil converted to this special oil should continue to use this oil whenever a service requiring the differential oil replacement is indicated.
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      12-11-2012, 10:32 PM   #669
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Any of you guys know a good shop to get a scan?
Im talking a good bmw scanner, sort of like a bt cable.
Let me know.
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      12-12-2012, 05:39 PM   #670
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was the diff oil. all fixed now
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      12-12-2012, 06:24 PM   #671
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Quote:
Originally Posted by GewoW View Post
This sounds a lot like the issue:
Sounds like a trip to the dealer?
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Last edited by jgalaxy; 12-12-2012 at 06:26 PM. Reason: Never mind. Looks like you have it under control.
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      12-12-2012, 06:25 PM   #672
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Quote:
Originally Posted by Beemw335 View Post
Any of you guys know a good shop to get a scan?
Im talking a good bmw scanner, sort of like a bt cable.
Let me know.
Are you looking for something or just want to see what codes you're throwing?
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      12-12-2012, 06:33 PM   #673
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Quote:
Originally Posted by jgalaxy View Post
Sounds like a trip to the dealer?
trip had been made and problem has been fixed! purrs like a cat now
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      12-12-2012, 09:51 PM   #674
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Quote:
Originally Posted by GewoW View Post
trip had been made and problem has been fixed! purrs like a cat now
weird that your diff started making noise all of a sudden especially since it wasnt making noise before...

when i had my M, i changed the diff fluid every 25k kms.... so i guess thats why i didn't have any issues.... it was just preventative measure for me.

i changed the diff fluid on the RS recently too since i dont know when it was last changed by the previous owner.

did the dealer cover this under warranty? i had to pay out of pocket when i was doing my regular diff fluid changes.
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      12-12-2012, 10:23 PM   #675
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Quote:
Originally Posted by montreal red View Post
weird that your diff started making noise all of a sudden especially since it wasnt making noise before...

when i had my M, i changed the diff fluid every 25k kms.... so i guess thats why i didn't have any issues.... it was just preventative measure for me.

i changed the diff fluid on the RS recently too since i dont know when it was last changed by the previous owner.

did the dealer cover this under warranty? i had to pay out of pocket when i was doing my regular diff fluid changes.
they changed diff oli a week ago, but did not use this special one with the additive to reduce clutch plate friction
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      12-13-2012, 11:12 AM   #676
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Quote:
Originally Posted by jgalaxy
Quote:
Originally Posted by Beemw335 View Post
Any of you guys know a good shop to get a scan?
Im talking a good bmw scanner, sort of like a bt cable.
Let me know.
Are you looking for something or just want to see what codes you're throwing?
Looking to see what codes I have, if any. No cel or ses but car hesitates at low rpm (probably carbon build up) so Im sure there are some codes just not severe enough for ses light.
Also, my tpms light is permanently on, got a flat (screw in tire) light came on. I fixed the tire and adjusted the pressure but the light wont go off. Im hoping I can clear that with a good cable/scanner?
If anyone knows, please let me know!
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      12-13-2012, 09:11 PM   #677
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Quote:
Originally Posted by GewoW View Post
they changed diff oli a week ago, but did not use this special one with the additive to reduce clutch plate friction
ahh so thats the cause of the noise???

did you pay for the first diff oil change ? cos if you did, i hope they did the 2nd diff fluid flush for free.

i always use the SAF-XJ + FM booster fluid.
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      12-13-2012, 09:56 PM   #678
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Quote:
Originally Posted by montreal red View Post
ahh so thats the cause of the noise???

did you pay for the first diff oil change ? cos if you did, i hope they did the 2nd diff fluid flush for free.

i always use the SAF-XJ + FM booster fluid.
no and no

i could have realistically still ran with that fluid. the only difference is that now the plates slip on each other more to make less noise. i don't think there is any detrimental issue here, at least i hope
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      12-13-2012, 09:58 PM   #679
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Quote:
Originally Posted by GewoW View Post
was the diff oil. all fixed now
Was it a leak, have to top it off, needed to be changed?
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      12-13-2012, 10:05 PM   #680
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Quote:
Originally Posted by jgalaxy View Post
Was it a leak, have to top it off, needed to be changed?
they changed diff oli a week ago, but did not use this special one with the additive to reduce clutch plate friction. switched it now

this was the exact issue:

Quote:
SI B33 01 02
Rear Axle January 2009
Technical Service

This Service Information bulletin supersedes SI B33 01 02 dated March 2008.

designates changes to this revision

SUBJECT
Grinding Noise from the Differential during Slow Cornering


MODEL
E46 M3 from start of production

E60 M5 from start of production

E63, E64 M6 from start of production

E90, E92 and E93 M3 from start of production

E85, E86 with S54 from start of production


SITUATION
A grinding noise may be heard coming from the differential during slow cornering.

This noise is best heard during tight cornering situations; for example, while parallel parking, driving in a tight circle, etc.

CAUSE
When the rear wheel speed differential varies during tight cornering, a slip stick effect is created on the lining and steel discs incorporated in the differential locking clutch, causing the grinding noise.

This noise typically goes away as the locking clutch discs in the differential are broken in.

The break-in time varies depending on driving habits; for example, tighter cornering (working the locking clutch) means that it takes less time to break in the locking clutch discs.

CORRECTION
If a customer complaint is verified as described above on the E46 M3; E60 M5; E63 and E64 M6; or on the E90, E92 and E93 M3 vehicles, the differential oil should be replaced with a specially formulated differential oil, BMW part number 83 22 2 282 583.

PROCEDURE

Drain the differential oil. Refer to the appropriate model repair instruction in TIS:

Main Group 33 / Subgroup 10 / RA 0011259.

Refill the differential with special differential oil as shown in the illustration below.

Differential fill capacity = 1.2 liters (1.3 quarts).


Remove the seal (1) between the bottle cap and neck.

Pull the filler tube (2) out of the bottle.

Remove the cap (3) from the filler tube (2).

Insert the filler tube into the fill hole in the differential and with the bottle positioned under the output shaft, squeeze the bottle to transfer the oil into the differential.

Road test the vehicle.

With the vehicle at operating temperature, drive in tight circles (20 circles in each direction), allowing the special oil to coat the locking clutch discs.

The grinding noise will decrease when the locking clutch discs are sufficiently coated. Some slight noises may still be heard after driving in tight circles. Advise the customer that it will be necessary to drive the vehicle up to 600 miles before all noises are eliminated.

Note: Vehicles that have had the differential oil converted to this special oil should continue to use this oil whenever a service requiring the differential oil replacement is indicated.

PARTS INFORMATION
Part Number
Description
Qty.

83 22 2 282 583
Special differential oil kit
1

Contains 3 bottles - .5 liters (.53 quarts) each

(order quantity 1 : bill out quantity 3)

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.

Defect Code
33 10 92 39 00

Replace differential oil with special oil

Labor Operation:
00 53 267

Labor Allowance:
3 FRU
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      12-13-2012, 11:43 PM   #681
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Anybody heading to Freeport in the next weeks let me know. Little package to pick up! Thanks.
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      12-13-2012, 11:44 PM   #682
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Quote:
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Anybody heading to Freeport in the next weeks let me know. Little package to pick up! Thanks.
going tomorrow, email me
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