12-06-2021, 10:10 AM | #23 | |
Lieutenant
234
Rep 526
Posts |
Quote:
i'm going to take photos of the turbo and inside just for my own curiosity before they send it back to germany. i don't use the cars performance anymore anyway so i'm not fussed tbh. It was a worrying niggle that has at least been looked at and something was found and done about it so i'm happy. I'll just keep on extending my warranty indefinitely. |
|
Appreciate
0
|
12-10-2021, 08:23 PM | #24 |
Private
24
Rep 51
Posts |
On my end, the used transmission oil analysis finally came back today. No issues at all. Aluminum, iron, copper, and lead came back at 26ppm, 52ppm, 17ppm, and 2ppm, respectively, on a 24k mile sample. Good news! There really should have been something elevated there if it was losing a bearing or the gears were somehow mangled.
I'm forced to conclude that either a) I'm barking up the wrong tree or b) the whine is inconsequential. I just can't fathom it not coming from the transmission given how specific it is to lower forward gears. Probably time to quit worrying about it, maybe re-sample if something changes, and do a UOA on the engine at the next oil change just on principle. If nothing's mechanically failing, I'm not going to keep chasing it.
__________________
Present: ‘24 X3 xDrive30i
Past: ‘17 M240i |
Appreciate
0
|
06-19-2022, 11:29 AM | #25 |
Private
24
Rep 51
Posts |
Meh. This sound has started grating on me again lately. I don't think anything has changed, I just think I can't quit focusing on it. I'm still convinced that it's gear noise, and there's some kind of resonance that makes it more noticeable at certain rev ranges. 1700-2500RPM in 3rd and 4th are the worst. Below those revs it builds continuously from an unobjectionable whir to the nasty whine that peaks in the low 2k's. I went for a joyride this morning and discovered that there is NO problem if:
-I keep my foot all the way in it -I keep the revs well above 3k Sounds great under those circumstances. Sadly that's not really a solution. I crawled under it earlier in the day to check mounts, heat shields, shift linkage, etc. for any obvious problems. One of the bolts on the trans mount bracket was a touch loose but snugging it up didn't help. I also didn't see anything weird like poly mounts installed by the PO or a short shift kit with hard bushings. And everything around the trans appears to be in its proper place. So I'm a little torn. The trans fluid change did wonders after about 500mi of letting the new fluid work...great shift action, no more lockouts. But the sound is soooo annoying.
__________________
Present: ‘24 X3 xDrive30i
Past: ‘17 M240i |
Appreciate
0
|
06-19-2022, 04:47 PM | #26 |
Private First Class
160
Rep 166
Posts |
‘19 m240i AT
I’ve heard it in my car. Wondered about it. Forgot about it. Heard it again. Based on feedback here, for now, I’m comfortable believing it’s normal (or impossible to find). |
Appreciate
0
|
07-27-2023, 08:12 PM | #27 |
Private First Class
46
Rep 187
Posts
Drives: '17 440ix, '16 228ix (Sold)
Join Date: Apr 2021
Location: Buffalo, NY
|
Going through the same thing right now, just got my AT serviced and the noise has come up. mainly on a launch in 1st gear-coasting through into 2nd. here's a vid. https://www.youtube.com/shorts/xt9fA36Pt5o
I want to say this is normal very badly. |
Appreciate
0
|
07-28-2023, 08:37 AM | #28 |
Major
2536
Rep 1,483
Posts |
I started to hear this whine last summer after I had my transmission serviced. I hear it a lot after the car is warmed up. Mostly in 1st gear under moderate acceleration. Then shifting from 2 to 3, and 3 to 4, there is a whine during the shifts some times. I hate that it makes that noise but the car performs and functions 100% perfectly.
__________________
2024 M2
2019 M240i- Sold |
Appreciate
0
|
08-01-2023, 02:24 PM | #29 |
Major
813
Rep 1,365
Posts |
Mine used to do it. Think I started noticing it around maybe 40k miles. Started slipping badly at around 71k, so sent it off to Pure for a Stage 1 build.
__________________
2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ DAW Ultra Flow/ DS2/ Nostrum injectors/ E40 Doug Newton tuned/ ER DP/ Remus axle back/ BMS intake/ FTP CP/ M Perf LSD
|
Appreciate
0
|
08-01-2023, 04:08 PM | #30 |
Major
2536
Rep 1,483
Posts |
Out of curiosity, what does that build cost?
__________________
2024 M2
2019 M240i- Sold |
Appreciate
0
|
08-02-2023, 08:41 AM | #31 |
Major
813
Rep 1,365
Posts |
^^
$5,999 plus 1,750 for upgraded converter. There are less expensive options now. A couple shops are doing Stage 1 builds for around $4,500 now.
__________________
2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ DAW Ultra Flow/ DS2/ Nostrum injectors/ E40 Doug Newton tuned/ ER DP/ Remus axle back/ BMS intake/ FTP CP/ M Perf LSD
|
Appreciate
1
JMcLellan2535.50 |
08-02-2023, 12:08 PM | #32 |
Major
2536
Rep 1,483
Posts |
That isn't too bad. Nice to know that is an option in case the whine turns into something more.
__________________
2024 M2
2019 M240i- Sold |
Appreciate
0
|
08-27-2023, 10:06 PM | #33 | |
Private First Class
46
Rep 187
Posts
Drives: '17 440ix, '16 228ix (Sold)
Join Date: Apr 2021
Location: Buffalo, NY
|
Quote:
|
|
Appreciate
0
|
08-27-2023, 10:07 PM | #34 |
Private First Class
46
Rep 187
Posts
Drives: '17 440ix, '16 228ix (Sold)
Join Date: Apr 2021
Location: Buffalo, NY
|
|
Appreciate
0
|
08-28-2023, 01:11 PM | #35 | |
Major
2536
Rep 1,483
Posts |
Quote:
I am now noticing the whining the most when the car is really warm. And shifting from 2 to 3, and 3 to 4, there is a whining buzz as it shifts.
__________________
2024 M2
2019 M240i- Sold |
|
Appreciate
0
|
08-28-2023, 01:19 PM | #36 | |
Private First Class
46
Rep 187
Posts
Drives: '17 440ix, '16 228ix (Sold)
Join Date: Apr 2021
Location: Buffalo, NY
|
Quote:
|
|
Appreciate
0
|
08-28-2023, 05:13 PM | #37 | |
Major
2536
Rep 1,483
Posts |
Quote:
The root cause is mysterious though. Could it be that the sound dampening is compromised after being serviced? Is the new pan not as thick and allowing more sound? Someone mentioned that the service cleans out the gunk buildup on the internal components, so we are hearing more after service....but if this was true then wouldn't people hear this when the car is brand new as well?
__________________
2024 M2
2019 M240i- Sold |
|
Appreciate
0
|
08-31-2023, 02:41 PM | #38 | |
Private First Class
46
Rep 187
Posts
Drives: '17 440ix, '16 228ix (Sold)
Join Date: Apr 2021
Location: Buffalo, NY
|
Quote:
|
|
Appreciate
1
JMcLellan2535.50 |
09-18-2023, 02:49 PM | #39 |
Private
11
Rep 72
Posts |
Another one with the whining noise, specially over 3 or 4k, after car is hot and pulling a few times.
gippy any update on your car? they changed your turbo right? did the sound disappear forever? Thanks. |
Appreciate
0
|
10-06-2023, 01:50 PM | #40 |
New Member
0
Rep 6
Posts |
my f30 started making the same noise around 1.5 years ago at 57k km (35k mi), I finally was able to get the shop foreman to go for a ride with me and he acknowledged the whine. He performed an oil balancing on the transmission and found out it was 1L low on transmission fluid, he ended topped it up and the sound did not go away.
|
Appreciate
0
|
11-02-2023, 10:51 AM | #41 |
First Lieutenant
120
Rep 362
Posts
Drives: 2014 BMW 228i, 2017 BMW M240i
Join Date: Apr 2021
Location: Northern Virginia
|
Recently did did the pan and fluid replacement on my 2017 M240i that makes the noise. No visible contaminants in the old oil and the oil still looked very clean and green, which was not the case in my 2014 228i. The noise persists. I'd consider it to not be harmful. Kinda sounds nice ngl.
|
Appreciate
1
JMcLellan2535.50 |
Post Reply |
Bookmarks |
|
|