Whistle Sound + parts + Crazy

ALCOBENDAS · 11-19-2018, 12:28 PM

Hello from Spain, I have been spinning this sound for a while .. it appeared after doing a full maintenance of bearings and fulls stage 2 evolve. I thought it was a pulley problem .. I changed everything .. tension pulleys etc .. but everything is the same ... now I start thinking that it can be the ICV or the wáter pump .. the sound is like a whistle that is paired to the rpm of the engine .. it looks like an air intake or similar .. but it is checked all connections to the intake .. to see what you think .. The car works perfectly

BayE30 · 11-19-2018, 12:49 PM

i dont hear anything out of the ordinary. sounds fine.

ALCOBENDAS · 11-19-2018, 12:56 PM

The sound is each acceleration .. it sounds like Kompressor

BayE30 · 11-19-2018, 01:20 PM

Quote:

Originally Posted by ALCOBENDAS

The sound is each acceleration .. it sounds like Kompressor

every s65 i have ever heard sounds like this.

mikefil128i · 11-19-2018, 08:31 PM

Is the whistle very loud while driving under 3500rpm? If so, my car just started a whistle/whine noise and its coming from the ac compressor area.

ALCOBENDAS · 11-20-2018, 09:52 AM

Yes.. this área.. power steering.. or wáter pump… but i conect the ac.. and nothing diference… move the steering and nothing.. only sound with the rpm..

I have disconnected the manifold intakes to test .. and the sound is similar but it does not sound the same ..

these days I will see with a stethoscope to see if I find something else ..

The similar cases that I have seen in this and other forums have been .. ICV or power steerign

ALCOBENDAS · 11-20-2018, 11:56 AM

Redd · 11-20-2018, 06:34 PM

I had the same sound. What I did was slowly remove all the intake system components piece by piece. After every piece, give the engine a rev and see if the sound is still there.

In my case, I localized it to the intake plenum sitting on the engine. There was a small air leak at the joint between the top and bottom halves. Fixed it with some epoxy.

ALCOBENDAS · 11-21-2018, 12:18 PM

Quote:

Originally Posted by Redd

I had the same sound. What I did was slowly remove all the intake system components piece by piece. After every piece, give the engine a rev and see if the sound is still there.

In my case, I localized it to the intake plenum sitting on the engine. There was a small air leak at the joint between the top and bottom halves. Fixed it with some epoxy.

Thanks for the info! I'm going to do it

Any more opinions?

ALCOBENDAS · 11-26-2018, 12:12 PM

Today I did some tests ... I took off the intake and put the ear in the plenum .. the noise did not seem to come from there inside .. I covered the whole plenum and filled it with smoke .. the smoke was not going anywhere ... I'm back like I was at the beginning .. I do not know if it will be from the water pump .. power steering .. or I do not know the truth ..

I would have to start changing expensive pieces .. playing the lottery ..

s0ldats · 03-10-2020, 11:26 PM

any update?

atruelunatic · 03-13-2020, 05:11 PM

I had a similar sound recently. 110k mi. I replaced the idler pulley, tensioners, and tensioner pulleys. Sound went away, but not sure which item did it.

11-19-2018, 12:28 PM	#1
ALCOBENDAS First Lieutenant 94 Rep 326 Posts Drives: M3 F82 Join Date: Sep 2018 Location: SPAIN (PARACU) iTrader: (0)	Whistle Sound + parts + Crazy Hello from Spain, I have been spinning this sound for a while .. it appeared after doing a full maintenance of bearings and fulls stage 2 evolve. I thought it was a pulley problem .. I changed everything .. tension pulleys etc .. but everything is the same ... now I start thinking that it can be the ICV or the wáter pump .. the sound is like a whistle that is paired to the rpm of the engine .. it looks like an air intake or similar .. but it is checked all connections to the intake .. to see what you think .. The car works perfectly Last edited by ALCOBENDAS; 11-20-2018 at 10:00 AM..
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11-19-2018, 12:49 PM	#2
BayE30 Lieutenant Colonel 1341 Rep 1,881 Posts Drives: 2011.75 E90 M3 ZCP Join Date: Jul 2014 Location: San Francisco iTrader: (5)	i dont hear anything out of the ordinary. sounds fine. __________________ I am never able to post pictures on forums, all my pics are on IG @baye30 https://www.instagram.com/baye30/ Current Garage - [2011 E90 M3 ZCP] [2005 E53 X5 3.0 Sport] [1988 E30 325IS 24V]
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11-19-2018, 12:56 PM	#3
ALCOBENDAS First Lieutenant 94 Rep 326 Posts Drives: M3 F82 Join Date: Sep 2018 Location: SPAIN (PARACU) iTrader: (0)	The sound is each acceleration .. it sounds like Kompressor
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11-19-2018, 08:31 PM	#5
mikefil128i Private 9 Rep 73 Posts Drives: 2011 BMW M3 Join Date: Mar 2013 Location: New England iTrader: (0)	Is the whistle very loud while driving under 3500rpm? If so, my car just started a whistle/whine noise and its coming from the ac compressor area.
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11-20-2018, 09:52 AM	#6
ALCOBENDAS First Lieutenant 94 Rep 326 Posts Drives: M3 F82 Join Date: Sep 2018 Location: SPAIN (PARACU) iTrader: (0)	Yes.. this área.. power steering.. or wáter pump… but i conect the ac.. and nothing diference… move the steering and nothing.. only sound with the rpm.. I have disconnected the manifold intakes to test .. and the sound is similar but it does not sound the same .. these days I will see with a stethoscope to see if I find something else .. The similar cases that I have seen in this and other forums have been .. ICV or power steerign Last edited by ALCOBENDAS; 11-20-2018 at 10:03 AM..
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11-20-2018, 11:56 AM	#7
ALCOBENDAS First Lieutenant 94 Rep 326 Posts Drives: M3 F82 Join Date: Sep 2018 Location: SPAIN (PARACU) iTrader: (0)
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11-20-2018, 06:34 PM	#8
Redd Brigadier General 3900 Rep 4,164 Posts Drives: 2010 BMW E92 M3 Dakar Edition Join Date: Jul 2015 Location: Malaysia iTrader: (0)	I had the same sound. What I did was slowly remove all the intake system components piece by piece. After every piece, give the engine a rev and see if the sound is still there. In my case, I localized it to the intake plenum sitting on the engine. There was a small air leak at the joint between the top and bottom halves. Fixed it with some epoxy.
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11-26-2018, 12:12 PM	#10
ALCOBENDAS First Lieutenant 94 Rep 326 Posts Drives: M3 F82 Join Date: Sep 2018 Location: SPAIN (PARACU) iTrader: (0)	Today I did some tests ... I took off the intake and put the ear in the plenum .. the noise did not seem to come from there inside .. I covered the whole plenum and filled it with smoke .. the smoke was not going anywhere ... I'm back like I was at the beginning .. I do not know if it will be from the water pump .. power steering .. or I do not know the truth .. I would have to start changing expensive pieces .. playing the lottery ..
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03-10-2020, 11:26 PM	#11
s0ldats First Lieutenant 54 Rep 334 Posts Drives: 2011 E90 M3 stripper Join Date: Aug 2019 Location: socal iTrader: (0)	any update?
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03-13-2020, 05:11 PM	#12
atruelunatic Lieutenant 96 Rep 473 Posts Drives: n/a Join Date: Jun 2011 Location: Seattle, WA iTrader: (1)	I had a similar sound recently. 110k mi. I replaced the idler pulley, tensioners, and tensioner pulleys. Sound went away, but not sure which item did it. __________________ 2011 e92 JzB 6MT Akrapovic Evolution, ESS Tune, KW V3
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