Does anyone have experience with this engine "whistle" sound?

dreamspeed · 10-18-2017, 06:02 PM

Quote:

Originally Posted by Talk2meg00se

"gunk accumulates around the idle air valve so that it doesn't close 100% therefore causing a whistling sound"

this valve closes under acceleration?

That's my understanding. When the car is idling the throttle body butterflies are closed so the idle air valve needs to open so air can get into the engine for combustion. When you accelerate the idle air valve closes since the butterflies are now open.

iirc i did see an additional air hose on the idle control unit to let some amount of air pass by even when it's closed also.

So far i haven't been able to confirm anything besides the fact that the whistling goes away if i disconnect the idle air hose.

Talk2meg00se · 10-19-2017, 03:33 PM

Quote:

Originally Posted by dreamspeed

That's my understanding. When the car is idling the throttle body butterflies are closed so the idle air valve needs to open so air can get into the engine for combustion. When you accelerate the idle air valve closes since the butterflies are now open.

iirc i did see an additional air hose on the idle control unit to let some amount of air pass by even when it's closed also.

So far i haven't been able to confirm anything besides the fact that the whistling goes away if i disconnect the idle air hose.

"the whistling goes away if i disconnect the idle air hose."

sounds like you are very close to solving this riddle

Route 16 · 01-21-2018, 01:59 AM

this may be the source of my whistling as well, thought it was the ICV too

BOOF-M3 · 01-21-2018, 10:20 AM

Quote:

Originally Posted by Route 16

this may be the source of my whistling as well, thought it was the ICV too

Whistling sound upon acceleration http://www.m3post.com/forums/showthread.php?t=1417824

Dreamspeed added this...

Route 16 · 01-21-2018, 04:07 PM

Quote:

Originally Posted by BOOF-M3

Whistling sound upon acceleration http://www.m3post.com/forums/showthread.php?t=1417824

Dreamspeed added this...

yup that's the other thread that lead it to me too, I'll try to add my videos replicating it

xjinpark · 05-15-2018, 08:29 PM

Sooo no one found out how to solve this damn riddle.. seems like it is not a major problem though

BOOF-M3 · 05-15-2018, 09:06 PM

Quote:

Originally Posted by xjinpark

Sooo no one found out how to solve this damn riddle.. seems like it is not a major problem though

I'm pretty sure we did figure it out?

jasonrp15 · 05-17-2018, 01:27 PM

I had this issue in the past and it was the Intake Plenum. There was a hairline crack in it.

Talk2meg00se · 05-20-2018, 01:08 PM

Quote:

Originally Posted by jasonrp15

I had this issue in the past and it was the Intake Plenum. There was a hairline crack in it.

how did you figure that out?

jasonrp15 · 05-25-2018, 11:44 AM

Quote:

Originally Posted by Talk2meg00se

how did you figure that out?

I had the techs at Active Autowerke take a look and that was the only location the sound seemed to come from during low rpms acceleration. Replaced and it was fixed!

Talk2meg00se · 05-25-2018, 03:48 PM

Quote:

Originally Posted by jasonrp15

I had the techs at Active Autowerke take a look and that was the only location the sound seemed to come from during low rpms acceleration. Replaced and it was fixed!

I had a vacuum test done -- no leaks. Someone else suggested the seal between the exhaust and the engine. Not that either.

Talk2meg00se · 06-13-2018, 06:50 PM

UPDATE: whistle sound **fixed**. A big thank you to Beverly Hills BMW for solving.

Part no.: 11-61-7-838-010

M3 Number 86 · 12-03-2018, 01:37 AM

Quote:

Originally Posted by Talk2meg00se

UPDATE: whistle sound **fixed**. A big thank you to Beverly Hills BMW for solving.

Part no.: 11-61-7-838-010

Is this the elbow?

amrazM · 12-03-2018, 04:00 AM

My bmc filter used to do this, it went away with the eventuri kit and airbox lid.

pocky · 02-03-2019, 03:08 PM

Quote:

Originally Posted by Talk2meg00se

UPDATE: whistle sound **fixed**. A big thank you to Beverly Hills BMW for solving.

Part no.: 11-61-7-838-010

So this part number is the entire intake plenum ?

How many miles do you have?

Helmsman · 02-03-2019, 03:38 PM

Quote:

Originally Posted by pocky

So this part number is the entire intake plenum ?

How many miles do you have?

Google say so: https://www.ecstuning.com/b-genuine-bmw-parts/--m3-intake-manifold/11617838010/

E9T.two · 08-01-2019, 01:22 AM

Quote:

Originally Posted by Talk2meg00se

UPDATE: whistle sound **fixed**. A big thank you to Beverly Hills BMW for solving.

Part no.: 11-61-7-838-010

Oh THANK GOD. heading over there ASAP. Happen to remember your service advisor?

FrozenE92M3 · 02-20-2020, 09:50 PM

Quote:

Originally Posted by Talk2meg00se

UPDATE: whistle sound **fixed**. A big thank you to Beverly Hills BMW for solving.

Part no.: 11-61-7-838-010

Sorry to revive old thread but up to what mileage is this covered by federal warranty? I have the same whistle on my 97k mile 2013 M3 Coupe. I live in California. Is this an emissions thing that is covered under California warranty?

01-21-2018, 01:59 AM	#25
Route 16 I got lei'd 844 Rep 7,593 Posts Drives: '10 E90 M3 Join Date: Sep 2011 Location: Dark Side of the Moon iTrader: (62)	this may be the source of my whistling as well, thought it was the ICV too
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05-15-2018, 08:29 PM	#28
xjinpark Enlisted Member 4 Rep 39 Posts Drives: E93 M3 Join Date: Mar 2018 Location: San Jose iTrader: (0)	Sooo no one found out how to solve this damn riddle.. seems like it is not a major problem though
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05-17-2018, 01:27 PM	#30
jasonrp15 Private 9 Rep 52 Posts Drives: 2009 BMW M3 Join Date: Nov 2011 Location: Sunrise, FL iTrader: (0)	I had this issue in the past and it was the Intake Plenum. There was a hairline crack in it. __________________ Active AutoWerke Signature Exhaust, AA Test Pipes, AA Tune, Vorsteiner GTS-V Rear Diffuser, Vorsteiner Front Lip
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06-13-2018, 06:50 PM	#34
Talk2meg00se Captain 102 Rep 660 Posts Drives: 2013 E92 M3 Join Date: Aug 2010 Location: Los Angeles iTrader: (0)	UPDATE: whistle sound fixed. A big thank you to Beverly Hills BMW for solving. Part no.: 11-61-7-838-010 Attached Images __________________ TiAg \| ZCP \| DCT \| Euro MDM \| aFe filter \| MS Pulley \| Akra Slip-on \| MS Spacers \| 255/275 M4S \| H8 180s
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12-03-2018, 04:00 AM	#36
amrazM mTekMods 2132 Rep 2,893 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	My bmc filter used to do this, it went away with the eventuri kit and airbox lid.
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