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7 Series - F01 / F02 (2009 - current)
The new re-designed 7 series F01 / F02 leads off the BMW Fxx chassis code!

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  #1  
Old 01-30-2010, 04:09 PM
rsingh111 rsingh111 is offline
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Powertrain whine

I have a 2009 model 750. Does anyone else notice a whine from either powertrain or transmission. Louder in low gear. Is this normal?
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  #2  
Old 01-31-2010, 03:29 PM
ZedJes ZedJes is offline
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I have read several professional reviews that have commented on this issue so I assume it's normal IMO.
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  #3  
Old 03-29-2010, 07:59 AM
docblank docblank is offline
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i have the same model and the same whining noise just as you describe......i also have noticed a "delay" in gear shifting between 1st and 2nd. mine is in for servicing right now and they are doing a "reprogramming" that they hope will fix this issue.
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  #4  
Old 03-29-2010, 08:41 AM
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LovinM6 LovinM6 is offline
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I have the same whine. I was told by my SA that it is not the powertrain but the engine turbos that are located up by the windshield in the engine compartment.
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  #5  
Old 03-29-2010, 10:38 AM
Deutsch100 Deutsch100 is offline
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While a delay between gears is NEVER normal, the whine I think is normal and ok. I too, was told it was the twin turbo system.
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  #6  
Old 03-29-2010, 01:15 PM
rsingh111 rsingh111 is offline
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Please let me know about the reprogram. The whine is driving me crazy. Don't understand why the turbos should be engaging at low speeds.
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  #7  
Old 03-29-2010, 05:59 PM
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BMR2009 BMR2009 is offline
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Only in sport or sport + mode for me. It is a little strange.

It is not the turbos, but the drive train. When you put the car in sport mode it changes the transmission setting, and in doing so increases the whine of the gears as it shifts down. I've done this several times and can confirm this.
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Last edited by BMR2009; 03-31-2010 at 08:00 PM.
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  #8  
Old 04-04-2010, 11:18 AM
CT7er CT7er is offline
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Quote:
Originally Posted by BMR2009 View Post
Only in sport or sport + mode for me. It is a little strange.

It is not the turbos, but the drive train. When you put the car in sport mode it changes the transmission setting, and in doing so increases the whine of the gears as it shifts down. I've done this several times and can confirm this.
Yes, this appears to be a correct assessment. When in Sport or Sport+, shifting down increases the whine. I doubt any reprogramming will rectify this "problem" characteristic. One would think, however, that would have been picked up when the car was in the engineering stage.
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  #9  
Old 06-13-2010, 04:00 PM
dfochil dfochil is offline
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Powertrain whine

See my post on June 13, 2010
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  #10  
Old 06-13-2010, 06:18 PM
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BMR2009 BMR2009 is offline
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Oil pump? I suppose it is possible, but I am skeptical as it is more linked to my speed than acceleration. I would love to hear your follow-up after they replace it, and if it goes away!!!!

Please, keep us posted. I am very interested.
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  #11  
Old 06-16-2010, 12:14 PM
750Li-2006 750Li-2006 is offline
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2010 750Li and I too have a whine and hesitation.
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  #12  
Old 06-16-2010, 01:03 PM
Deutsch100 Deutsch100 is offline
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Quote:
Originally Posted by BMR2009 View Post
Only in sport or sport + mode for me. It is a little strange.

It is not the turbos, but the drive train. When you put the car in sport mode it changes the transmission setting, and in doing so increases the whine of the gears as it shifts down. I've done this several times and can confirm this.
I have NEVER had my 750i in Sport mode or Sport+. Normal or Comfort for almost 4 months now...and I have the whine.

Spoke with my SA today, and said there was NO Service Bulletin, or even a note about the oil pump causing a whine. He also said, there is no information about the 2009-2011 7 Series needing or even getting a redesigned oil pump. He said, so far, the F0xxx 7 Series has been the best new model BMW has launched in years & years. He said he is amazed at the lack of problems. That is a good and bad thing...that he was expecting tons of issues from a BMW! Anyway, I'm VERY happy with my 750i. I actually love it!!
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  #13  
Old 06-17-2010, 02:38 PM
joejensen joejensen is offline
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My car has the same noise. Started at around 1500 miles and it has increased steadily. I now have 2900 miles. My noise seems to be more tied to engine RPM than speed. I can't really hear it when traveling faster than 30 mph. It's louder with the windows open. I'd say it sounds very much like a power steering pump that is low on fluid. But I've checked and mine is not low...joe
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  #14  
Old 06-17-2010, 05:06 PM
dfochil dfochil is offline
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My car's noise is 100% tied to engine RPM. In fact. to demonstrate it to the dealer, I just put the car in Park and rev'd up the engine to 2K RPM. He immediately agreed that there was an obnoxious noise.
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  #15  
Old 06-18-2010, 02:08 AM
Guards Red Car Guards Red Car is offline
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Ditto

Quote:
Originally Posted by joejensen View Post
My car has the same noise. Started at around 1500 miles and it has increased steadily. I now have 2900 miles. My noise seems to be more tied to engine RPM than speed. I can't really hear it when traveling faster than 30 mph. It's louder with the windows open. I'd say it sounds very much like a power steering pump that is low on fluid. But I've checked and mine is not low...joe
Agree 100% - Hear the "growl" at low speeds, and can reproduce it nicely when I put car in park, open driver's door and rev engine -- NOT a transmission issue.
The "growl" is somewhat catlike, but deeper - Maybe Cougarlike!

I am certain some engineer at BMW can explain this -- HELP US PLEASE!

I have a 2009 750i, Has anyone noted this on 6 cylinder, Active Hybrid, Diesel or 12 cylinder autos, or other model years?
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  #16  
Old 06-18-2010, 04:43 AM
dfochil dfochil is offline
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See my posts under separate thread "Powertrain Whining Noise". BMW knows about the problem and has redesigned the oil pump which causes it.
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  #17  
Old 06-29-2010, 04:24 PM
dfochil dfochil is offline
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Problem Solved -- It Is Indeed the Oil Pump

See my June 29 post under "Powertrain Whining Noise" for the solution to this problem.
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