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      10-17-2019, 02:24 AM   #1
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I experience an audible whine sound that occurs only when i do repeated high load accelerations. This happened recently when i was bedding in my new pads.

Has anyone experienced this issue? If so what was the problem? The dealer could not replicate my issue, so they stole my money for diagnosis and sent me on my way. Thank you in advance.
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      10-17-2019, 02:34 AM   #2
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Quote:
Originally Posted by blakep8 View Post
While bedding my new brakes, i experience an audible whine sound that occurs only when i do repeated high load accelerations.

Has anyone experienced this issue? If so what was the problem? The dealer could not replicate my issue, so they stole my money for diagnosis and sent me on my way. Thank you in advance.
how many miles on the car? maybe transmission fluid change is in order?
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      10-17-2019, 02:36 AM   #3
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Quote:
Originally Posted by blakep8 View Post
While bedding my new brakes, i experience an audible whine sound that occurs only when i do repeated high load accelerations.

Has anyone experienced this issue? If so what was the problem? The dealer could not replicate my issue, so they stole my money for diagnosis and sent me on my way. Thank you in advance.
how many miles on the car? maybe transmission fluid change is in order?
46k miles, you think a transmission fluid service would help the issue? A shop i talked to that specializes in BMW and he said it may be a failing stator in the torque converter.
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      10-17-2019, 02:52 AM   #4
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Quote:
Originally Posted by blakep8 View Post
Quote:
Originally Posted by DreamerJoe View Post
Quote:
Originally Posted by blakep8 View Post
While bedding my new brakes, i experience an audible whine sound that occurs only when i do repeated high load accelerations.

Has anyone experienced this issue? If so what was the problem? The dealer could not replicate my issue, so they stole my money for diagnosis and sent me on my way. Thank you in advance.
how many miles on the car? maybe transmission fluid change is in order?
46k miles, you think a transmission fluid service would help the issue? A shop i talked to that specializes in BMW and he said it may be a failing stator in the torque converter.
likley not fluid, are you sure its not your differential, do you use launch control alot? if you use launch control often it could be a premature sign of failure. I would take it to a second mechanic, BMW specialist, to get a second opinion. see if they come to the same conclusion as the first.
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      10-17-2019, 02:57 AM   #5
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Quote:
Originally Posted by DreamerJoe View Post
Quote:
Originally Posted by blakep8 View Post
Quote:
Originally Posted by DreamerJoe View Post
Quote:
Originally Posted by blakep8 View Post
While bedding my new brakes, i experience an audible whine sound that occurs only when i do repeated high load accelerations.

Has anyone experienced this issue? If so what was the problem? The dealer could not replicate my issue, so they stole my money for diagnosis and sent me on my way. Thank you in advance.
how many miles on the car? maybe transmission fluid change is in order?
46k miles, you think a transmission fluid service would help the issue? A shop i talked to that specializes in BMW and he said it may be a failing stator in the torque converter.
likley not fluid, are you sure its not your differential, do you use launch control alot? if you use launch control often it could be a premature sign of failure. I would take it to a second mechanic, BMW specialist, to get a second opinion. see if they come to the same conclusion as the first.
previous owner may have launched it frequently. the car also has 275 width tires, so he probably launched it plenty. Is differential more likely to fail compared to the transmission?
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      10-18-2019, 10:31 AM   #6
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bump, does anyone have any experience with a similar issue?
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      10-18-2019, 11:15 AM   #7
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get it to a zf service center , zf8 do tend to whine in reverse
but if they do under a forward heavy load , i wouldnt hammer it anymore till
someone decent looked at it
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      10-19-2019, 01:12 AM   #8
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m240i 2020 8AT whine ??? https://www.2addicts.com/forums/show....php?t=1660175
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      10-19-2019, 01:13 AM   #9
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that's not the whine i get...
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      10-19-2019, 01:15 AM   #10
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Quote:
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Quote:
Originally Posted by Poochie View Post
that's not the whine i get...
Ok, I though there was a connection. Good luck
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      10-19-2019, 01:16 AM   #11
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Quote:
Originally Posted by Poochie View Post
Quote:
Originally Posted by blakep8 View Post
Quote:
Originally Posted by Poochie View Post
that's not the whine i get...
Ok, I though there was a connection. Good luck
thank you for the reference. my whining sound is under load after intense driving for atleast 5 mintues.
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      10-19-2019, 10:19 AM   #12
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History on the car? It has low miles, oversized tires from previous owner, I guess no CPO warranty then because the dealer is only supposed to CPO cars in stock condition.

Have you seen the service history on the car?

I'm assuming no whine when you turn (wheel bearings whine when turning)?

Noise at the rear (Differential)?


I would get a second opinion from another dealer or a reputable transmission shop and try to record the sound. I would also look for tampering in the engine bay which might indicate a tune and therefor an abused engine.

If the vehicle has a CPO warranty, and you can confirm the vehicle had a tune. I would demand a refund. You could also inform BMWNA that the dealer certified a non-stock car.

This could just be another case where a dealer unloads an abused vehicle for a "good customer".
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      10-19-2019, 11:41 AM   #13
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Quote:
Originally Posted by F32Fleet View Post
History on the car? It has low miles, oversized tires from previous owner, I guess no CPO warranty then because the dealer is only supposed to CPO cars in stock condition.

Have you seen the service history on the car?

I'm assuming no whine when you turn (wheel bearings whine when turning)?

Noise at the rear (Differential)?


I would get a second opinion from another dealer or a reputable transmission shop and try to record the sound. I would also look for tampering in the engine bay which might indicate a tune and therefor an abused engine.

If the vehicle has a CPO warranty, and you can confirm the vehicle had a tune. I would demand a refund. You could also inform BMWNA that the dealer certified a non-stock car.

This could just be another case where a dealer unloads an abused vehicle for a "good customer".
I bought the car with 36,000 miles. perfect service history with every service record in the glove box. owner before me took care of the car service wise. i am led to believe it may be differential. i will post a few pictures of the differential, one of them i clean a section off. car had warranty which expired 2 weeks ago. BMW could not find the issue.
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