Another "weird noise" thread

RyanCT · 06-02-2013, 11:03 PM

Every time I turn on the AC in hot weather, I get this "whirring" noise that changes pitch with engine RPM in and out of gear. I'm assuming its the compressor because of this. Comes from behind the steering wheel, and it sounds awful. Anyone get this noise?

HFW003 · 06-02-2013, 11:47 PM

Check for cats in the engine bay

CKau · 06-03-2013, 07:42 AM

I get a whirring mechanised sound that raises volume with rpm only when i am in ECO Pro mode. None of the other modes produces this sound.

shivaswrath · 06-03-2013, 10:11 AM

replace the HVAC motor, it'll go away...early production models seem to have this issue.

marseille82 · 06-03-2013, 11:12 AM

Quote:

Originally Posted by RadRyDawg

Every time I turn on the AC in hot weather, I get this "whirring" noise that changes pitch with engine RPM in and out of gear. I'm assuming its the compressor because of this. Comes from behind the steering wheel, and it sounds awful. Anyone get this noise?

I have the same damn issue. Took it in and they could not reproduce the noise. Of course a day later, the noise is back. Especially when I'm in Sport mode

Is a constant noise for you?

Production date: 08/31/2013

RyanCT · 06-03-2013, 05:54 PM

I only hear it when AC is on, and on a hot day. Next time you hear it, turn off the AC, see what happens.

RyanCT · 06-03-2013, 08:30 PM

Quote:

Originally Posted by shivaswrath

replace the HVAC motor, it'll go away...early production models seem to have this issue.

Thanks SW for confirming

RyanCT · 07-15-2014, 09:24 PM

Turns out the a/c hose damper fixed it about 90%

jacar · 07-16-2014, 11:21 AM

Different question: when I push my AH3 (same engine as the 335) moderately to hard there is a rattle from the engine bay-is this normal induction/turbo sounds? Any reply by 335 owners is appreciated!

06-02-2013, 11:03 PM	#1
RyanCT Private 8 Rep 94 Posts Drives: 2015 F30 335i Join Date: Jul 2012 Location: CT iTrader: (0)	Another "weird noise" thread Every time I turn on the AC in hot weather, I get this "whirring" noise that changes pitch with engine RPM in and out of gear. I'm assuming its the compressor because of this. Comes from behind the steering wheel, and it sounds awful. Anyone get this noise? __________________ Ryan 2015 F30 335i
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06-02-2013, 11:47 PM	#2
HFW003 Brigadier General 5697 Rep 3,225 Posts Drives: 2024 M340i xdrive Join Date: Apr 2013 Location: Newcastle, Australia iTrader: (0)	Check for cats in the engine bay
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06-03-2013, 07:42 AM	#3
CKau First Lieutenant 33 Rep 391 Posts Drives: G01 X3 Xdrive30i M sport Join Date: Sep 2012 Location: sydney, australia iTrader: (0)	I get a whirring mechanised sound that raises volume with rpm only when i am in ECO Pro mode. None of the other modes produces this sound. __________________ 2018 BMW X3 xDrive30i M Sport [sold]2013 BMW X3 xDrive30d [Sold] 2013 F30 328i
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06-03-2013, 10:11 AM	#4
shivaswrath Brigadier General 649 Rep 4,323 Posts Drives: 2012 335i Join Date: Apr 2008 Location: Lost in NJ iTrader: (3)	replace the HVAC motor, it'll go away...early production models seem to have this issue. __________________ CURRENT: 2017 RS3 (miss you guys) SOLD: 2012 335i Mineral Gray M Performance Exhaust/Brakes/Suspension/LSD\|Bav Stage 1/AMP\|\|ER CP/IC/DP/OC \| Dinan CAI/N55 PWG BIG TURBO\|BMWF30.com
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06-03-2013, 05:54 PM	#6
RyanCT Private 8 Rep 94 Posts Drives: 2015 F30 335i Join Date: Jul 2012 Location: CT iTrader: (0)	I only hear it when AC is on, and on a hot day. Next time you hear it, turn off the AC, see what happens. __________________ Ryan 2015 F30 335i
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07-15-2014, 09:24 PM	#8
RyanCT Private 8 Rep 94 Posts Drives: 2015 F30 335i Join Date: Jul 2012 Location: CT iTrader: (0)	Turns out the a/c hose damper fixed it about 90% __________________ Ryan 2015 F30 335i
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07-16-2014, 11:21 AM	#9
jacar Private 8 Rep 69 Posts Drives: 2013 AH3 Join Date: Apr 2010 Location: Hawaii iTrader: (0)	Different question: when I push my AH3 (same engine as the 335) moderately to hard there is a rattle from the engine bay-is this normal induction/turbo sounds? Any reply by 335 owners is appreciated!
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