Weird noice coming from the engine? M240i

TakoMako · 11-20-2016, 02:16 PM

Can only hear this sound when driving. The sound comes when above 2000rpm.

It is that cat like sound, around 0:40 and 1:57. There are some in between too.

Is there something wrong?

3 to 5k rpm, 2 to 4th gear. It is an automatic. Outdoor temp about -3deg.C

Calgary, Canada

Joe240 · 11-20-2016, 02:51 PM

Only thing I hear that sounds odd is around 47seconds. Everything else sounds normal to me. Hard to hear anything other than the blinker >.<

BMWZ4 · 11-20-2016, 02:52 PM

You mean that hiss sound? Turbo spooling?

TakoMako · 11-20-2016, 03:00 PM

Quote:

Originally Posted by BMWZ4

You mean that hiss sound? Turbo spooling?

I was referring to the cat like sound during acceleration. Kinda like it was doing a long "meow" sound, like a dying cat.

TakoMako · 11-20-2016, 04:16 PM

BMWZ4 · 11-20-2016, 04:16 PM

Hmm...played it again. Couldn't hear it. No idea what that sound could be.

EDIT: listened to your 2nd vid and still can't hear anything out of the ordinary.

TakoMako · 11-20-2016, 04:19 PM

Quote:

Originally Posted by BMWZ4

Hmm...played it again. Couldn't hear it. No idea what that sound could be.

It is very small sound. Sounds like a belt being pulled really fast.

TakoMako · 11-20-2016, 04:20 PM

Quote:

Originally Posted by BMWZ4

Hmm...played it again. Couldn't hear it. No idea what that sound could be.

EDIT: listened to your 2nd vid and still can't hear anything out of the ordinary.

At 1:57, that sound?

overcoil · 11-20-2016, 04:20 PM

Sounds awesome to me.

TakoMako · 11-20-2016, 04:27 PM

Gonna upload another one in a bit, maybe more clear.

TakoMako · 11-20-2016, 04:41 PM

Can anyone else hear it? Kinda like when manually turn a electrical gear.

nike001 · 11-20-2016, 07:45 PM

In on troll thread.

TakoMako · 11-20-2016, 08:37 PM

Quote:

Originally Posted by nike001

In on troll thread.

I booked an appointment with bmw regardless. Gonna check with them tomorrow to make sure nothing is actually wrong.

Since no one else can hear it, it is either the video, or I suddenly gained a hearing ability. Better safe than sorry.

Joe240 · 11-21-2016, 01:53 AM

Quote:

Originally Posted by TakoMako

I booked an appointment with bmw regardless. Gonna check with them tomorrow to make sure nothing is actually wrong.

Since no one else can hear it, it is either the video, or I suddenly gained a hearing ability. Better safe than sorry.

Always a good idea. Videos hardly do any justice when trying to diagnose a sounds/noise. Same thing when comparing exhaust. There's just to many variables that can distort things like the speakers that it's being played on, the mic used to record, audio codex used, etc.

Bjmsr · 11-21-2016, 01:24 PM

I hear it....there is a known fix....turn up the stereo and drive it like you stole it!

Seriously....it's under warranty...just take it in and don't sweat it. Too much thinkin

Joe240 · 11-21-2016, 02:38 PM

I think you're hearing the active sound honestly. I think I hear what you're referring to and mine does the same. It's the active sound, basically the fake exhaust they play threw the speakers. If you have the HK system then disconnect the center speaker and see if that fixes it.

Uridian · 11-22-2016, 09:10 AM

I think I hear what you're talking about. It sounds to me like your transmission whirring away at your feet. I wouldn't worry about it.

allthatisntnow · 11-22-2016, 10:01 AM

I hear the disgruntled cat growl you're on about. Its a healthy mechanical sound. It'll just be the valve train or similar.

Maynard · 11-22-2016, 10:56 AM

It is the blinker signal effect. Don't you ever go online and read about this? You aren't ever supposed to use those turn signal thingies, or something real bad will happen (apparently auditory hallucinations set in - sounds fine to me).

TakoMako · 11-23-2016, 12:36 AM

Just an update

Took it to the dealership today too, they haven't found the source yet, but they hear it.

There might be something wrong, will update again tomorrow.

TakoMako · 11-23-2016, 03:42 PM

Update, it was the alternator, it is it fixed.

Dylan86 · 11-23-2016, 04:28 PM

Quote:

Originally Posted by TakoMako

Update, it was the alternator, it is it fixed.

Did they replace the Alternator? Or was it just loose/ out of alignment..

Strange issue for these cars, pretty rare IMO

11-20-2016, 02:16 PM	#1
TakoMako Private First Class 60 Rep 192 Posts Drives: M240i Xdrive Join Date: Nov 2016 Location: Canada iTrader: (0)	Can only hear this sound when driving. The sound comes when above 2000rpm. It is that cat like sound, around 0:40 and 1:57. There are some in between too. Is there something wrong? 3 to 5k rpm, 2 to 4th gear. It is an automatic. Outdoor temp about -3deg.C Calgary, Canada
	Appreciate 0 Tweet Quote

11-20-2016, 02:51 PM	#2
Joe240 Major 2925 Rep 1,303 Posts Drives: 2021 C8 Corvette 1LT Join Date: Jul 2016 Location: Pensacola iTrader: (0) Garage List 2020 GMC Sierra AT4 [0.00] 2019 BMW X3 M40i [0.00]	Only thing I hear that sounds odd is around 47seconds. Everything else sounds normal to me. Hard to hear anything other than the blinker >.<
	Appreciate 0 Quote

11-20-2016, 02:52 PM	#3
BMWZ4 Major General 1910 Rep 5,103 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	You mean that hiss sound? Turbo spooling? __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
	Appreciate 0 Quote

11-20-2016, 04:16 PM	#5
TakoMako Private First Class 60 Rep 192 Posts Drives: M240i Xdrive Join Date: Nov 2016 Location: Canada iTrader: (0)
	Appreciate 0 Quote

11-20-2016, 04:16 PM	#6
BMWZ4 Major General 1910 Rep 5,103 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	Hmm...played it again. Couldn't hear it. No idea what that sound could be. EDIT: listened to your 2nd vid and still can't hear anything out of the ordinary. __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
	Appreciate 0 Quote

11-20-2016, 04:20 PM	#9
overcoil Major General 3074 Rep 5,577 Posts Drives: M235i 6spd Join Date: Dec 2013 Location: Mid-Atlantic iTrader: (0)	Sounds awesome to me.
	Appreciate 0 Quote

11-20-2016, 04:27 PM	#10
TakoMako Private First Class 60 Rep 192 Posts Drives: M240i Xdrive Join Date: Nov 2016 Location: Canada iTrader: (0)	Gonna upload another one in a bit, maybe more clear.
	Appreciate 0 Quote

11-20-2016, 04:41 PM	#11
TakoMako Private First Class 60 Rep 192 Posts Drives: M240i Xdrive Join Date: Nov 2016 Location: Canada iTrader: (0)	Can anyone else hear it? Kinda like when manually turn a electrical gear.
	Appreciate 0 Quote

11-20-2016, 07:45 PM	#12
nike001 Captain 312 Rep 818 Posts Drives: 2018 718 Cayman Join Date: Apr 2011 Location: US iTrader: (2)	In on troll thread.
	Appreciate 0 Quote

11-21-2016, 01:24 PM	#15
Bjmsr Enlisted Member 21 Rep 43 Posts Drives: BMW 2017 M240i Convertible Join Date: Oct 2016 Location: Sacramento CA iTrader: (0)	I hear it....there is a known fix....turn up the stereo and drive it like you stole it! Seriously....it's under warranty...just take it in and don't sweat it. Too much thinkin
	Appreciate 0 Quote

11-21-2016, 02:38 PM	#16
Joe240 Major 2925 Rep 1,303 Posts Drives: 2021 C8 Corvette 1LT Join Date: Jul 2016 Location: Pensacola iTrader: (0) Garage List 2020 GMC Sierra AT4 [0.00] 2019 BMW X3 M40i [0.00]	I think you're hearing the active sound honestly. I think I hear what you're referring to and mine does the same. It's the active sound, basically the fake exhaust they play threw the speakers. If you have the HK system then disconnect the center speaker and see if that fixes it.
	Appreciate 0 Quote

11-22-2016, 09:10 AM	#17
Uridian Second Lieutenant 42 Rep 269 Posts Drives: E36 M3, 228i M Sport Join Date: Jan 2014 Location: NY iTrader: (0)	I think I hear what you're talking about. It sounds to me like your transmission whirring away at your feet. I wouldn't worry about it.
	Appreciate 0 Quote

11-22-2016, 10:01 AM	#18
allthatisntnow Lieutenant 377 Rep 596 Posts Drives: BMW M2C, 991 C2 Join Date: Sep 2014 Location: North East iTrader: (0)	I hear the disgruntled cat growl you're on about. Its a healthy mechanical sound. It'll just be the valve train or similar.
	Appreciate 0 Quote

11-22-2016, 10:56 AM	#19
Maynard Colonel 3848 Rep 2,873 Posts Drives: 228iX & M2C Join Date: Mar 2016 Location: Upstate NY iTrader: (1)	It is the blinker signal effect. Don't you ever go online and read about this? You aren't ever supposed to use those turn signal thingies, or something real bad will happen (apparently auditory hallucinations set in - sounds fine to me).
	Appreciate 0 Quote

11-23-2016, 12:36 AM	#20
TakoMako Private First Class 60 Rep 192 Posts Drives: M240i Xdrive Join Date: Nov 2016 Location: Canada iTrader: (0)	Just an update Took it to the dealership today too, they haven't found the source yet, but they hear it. There might be something wrong, will update again tomorrow.
	Appreciate 1 Joe2402925.00 Quote

11-23-2016, 03:42 PM	#21
TakoMako Private First Class 60 Rep 192 Posts Drives: M240i Xdrive Join Date: Nov 2016 Location: Canada iTrader: (0)	Update, it was the alternator, it is it fixed.
	Appreciate 0 Quote