08-27-2019, 01:09 PM | #1 |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
Strange Buzz on Power Up
Hello Bimmer Brain Trust;
My 2019 F90 makes an unusual sound since new. There is a loud buzz and vibration that happens. It sounds electro mechanical like a pump pressurizing. Hard to isolate location but seems front (engine) oriented. This happens occasionally when I first get in the car, only when it's cold and prior to ignition on, but during automated power up. What's happening? |
08-27-2019, 05:43 PM | #2 | |
///M
6649
Rep 3,683
Posts |
Quote:
Without video it's hard to help.
__________________
Life is too short...enjoy your life
///M |
|
Appreciate
0
|
08-27-2019, 10:53 PM | #4 | |
Major
1416
Rep 1,356
Posts |
Quote:
|
|
Appreciate
0
|
09-05-2019, 01:48 AM | #5 |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
I'm familiar with the usual power up sounds - this sounds like the diff is being ripped out.
I've been trying to get on video but this eludes me thus far. |
Appreciate
0
|
09-08-2019, 05:39 PM | #7 |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
Those are some big fuel pumps to make this loud of sound and vibration. Not saying its not possible but jeebus. On the other hand its intermittent - not every cold start etc.
|
Appreciate
0
|
09-09-2019, 08:18 PM | #8 |
Banned
407
Rep 2,704
Posts |
|
Appreciate
0
|
09-16-2019, 12:52 PM | #9 |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
|
Appreciate
0
|
09-16-2019, 08:35 PM | #10 |
Lieutenant
118
Rep 449
Posts |
I've heard a "fairly loud" buzz on occasion at start up. It does not sound like the SMG/DCT pump that primes when you unlock a car with those transmissions. It is also not fuel pump priming. Today I got in the car and left the door open as I put one foot on the brake, lo and behold...... I heard the sound as I felt the brake pedal move slightly under my foot. Could be brake booster.
__________________
Current BMWs;'18 M2, '20 R1250GS Adventure
Past BMWs;'22M850 Conv, '19 SG M5(ED 5/19),14 Ionic Silver i3, '16 S1000XR, '16 Azurite Black M5, '07 G650X-Challenge, '10 R1200GSA, '15 Mineral Gray M4, '14 S1000R,'10 Alpine White 135ia M-Sport, '13 Carbon Black X5 50i, '10 Carbon Black M5, '07 Graphite K1200GT, '08 335ia, '05 545i, '04 R1150R, '03.5 M3 Cabrio, '00 540ia, '97 M3 sedan, '97 540ia |
Appreciate
0
|
09-20-2019, 01:01 PM | #11 | |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
Quote:
This (brake booster) seems plausible to me. It happens only pre-startup - maybe it happens after start but cant decern it with the motor running. I'm going to see if putting my foot on the pedal will induce it... with video rolling. :-) |
|
Appreciate
0
|
09-21-2019, 11:26 PM | #13 |
Major
348
Rep 1,221
Posts |
has this exact noise on cold start with my f80. always for the first mile or so until the motor warmed up. never was able to pinpoint. sounds like a mechanical whining
__________________
.
|
Appreciate
0
|
10-15-2019, 12:00 AM | #14 |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
Finally something recorded...
This sound happens before any action from me to start the car etc. My Nest captured the sound (though not very well). The clip has the sound followed by me groaning about not getting it recorded on my iphone. My wife reminded me about the nest cam. This is an occasional but frequent sound. This sound is loud enough that it masks the normal power up sounds. Sound at 1 second time stamp https://www.dropbox.com/s/n2e1nvavb7...Noise.mp4?dl=0 I've tried the brake pedal during a noise event but no sensation. |
Appreciate
0
|
10-16-2019, 06:03 AM | #15 | |
Lieutenant
118
Rep 449
Posts |
Quote:
__________________
Current BMWs;'18 M2, '20 R1250GS Adventure
Past BMWs;'22M850 Conv, '19 SG M5(ED 5/19),14 Ionic Silver i3, '16 S1000XR, '16 Azurite Black M5, '07 G650X-Challenge, '10 R1200GSA, '15 Mineral Gray M4, '14 S1000R,'10 Alpine White 135ia M-Sport, '13 Carbon Black X5 50i, '10 Carbon Black M5, '07 Graphite K1200GT, '08 335ia, '05 545i, '04 R1150R, '03.5 M3 Cabrio, '00 540ia, '97 M3 sedan, '97 540ia |
|
Appreciate
0
|
10-19-2019, 07:31 PM | #17 |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
|
Appreciate
0
|
10-21-2019, 10:40 AM | #18 | |
First Lieutenant
155
Rep 317
Posts |
Quote:
good to know that i'm not alone |
|
Appreciate
0
|
10-28-2019, 11:22 PM | #19 |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
Thanks to my wife for pointing out the Nest cam... I've been trying to get it for a while... now... what the hell is it ?!?!
|
Appreciate
0
|
11-01-2019, 03:06 PM | #21 |
Banned
407
Rep 2,704
Posts |
This happened to me only once, and that was when I got in the car fast and used the brake to prop myself up and start right away.
Don't touch the brake pedal for a few seconds then hit the brake and start, did it go away ? |
Appreciate
0
|
11-06-2019, 05:31 PM | #22 |
ID10T Specialist
90
Rep 269
Posts
Drives: F90 | F97
Join Date: Aug 2014
Location: Nor Cal
iTrader: (1)
Garage List 2019 BMW M5 (f90) b ... [9.92]
2021 (F97) BMW X3mc [10.00] 2017 Toyota Land Cr ... [9.50] 2000 Toyota Land Cr ... [0.00] |
Not brake pedal related in my case. Usually when the driver door first opens. Happened to me today in a parking lot. car was warm, only off for about 10 minutes... happened right at door open.
Still hoping to get a better recording of it. |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|