Please help me diagnose a rattle

fwabbly · 04-16-2017, 05:07 PM

I have got videos of 2 rattles which might be due to the same problem and I'm hoping you guys might be able to tell me where they are coming from.

Rattle 1:
https://youtu.be/pNKqcDzrE7I

This rattle happens every time I turn off the car.

Rattle 2:
https://youtu.be/L27mwmH6pHg

This rattle happens infrequently, maybe every 10 times I drive the car. I haven't been able to capture it myself since it always starts while I'm driving. Sometimes it's quite like in the video and sometimes it gets quite a lot louder. The whirring speeds up with more revs and it usually made a lot quieter if I turn off the AC.

Do you think these noises are related? Is it something wrong with the AC?

The car is a 2012 F31 330d

Soul_Glo · 04-17-2017, 12:20 AM

Any fault codes?

owlsarepretty036 · 04-17-2017, 02:51 AM

Unfortunately, I can not help you! I'm not good at this. Sorry!((
myloweslife

ukbeemerboy · 04-17-2017, 04:22 PM

Quote:

Originally Posted by jonesphi

I have got videos of 2 rattles which might be due to the same problem and I'm hoping you guys might be able to tell me where they are coming from.

Rattle 1:
https://youtu.be/pNKqcDzrE7I

This rattle happens every time I turn off the car.

Rattle 2:
https://youtu.be/L27mwmH6pHg

This rattle happens infrequently, maybe every 10 times I drive the car. I haven't been able to capture it myself since it always starts while I'm driving. Sometimes it's quite like in the video and sometimes it gets quite a lot louder. The whirring speeds up with more revs and it usually made a lot quieter if I turn off the AC.

Do you think these noises are related? Is it something wrong with the AC?

The car is a 2012 F31 330d

Rattle one isn't a rattle. It's normal operating noise after shut down, mine does it as did my E90 before my current car.
Rattle two maybe linked to the air vent flaps adjusting but couldn't be sure.

Smee · 04-17-2017, 05:49 PM

Gonna say number 2 seems like aircon noise to me. mine drives me nuts

creepy coupe · 04-18-2017, 04:18 AM

The aircon won't be working at 2.5°.

Smee · 04-18-2017, 05:12 AM

aircon/heating/fan are pretty much always on. press the fan button down until its off and see if the noise on video 2 goes away.

mine does can hear it out the top centre vent

Cuninho · 04-18-2017, 05:27 AM

I had a similar noise to the first one, it was always when I turned off or on the AC.

Pulled all the head unit etc. out to install a new Alpine audio upgrade, when I put it all back together the noise had gone...

04-16-2017, 05:07 PM	#1
fwabbly New Member 0 Rep 18 Posts Drives: F31 330d Join Date: May 2016 Location: UK iTrader: (0)	Please help me diagnose a rattle I have got videos of 2 rattles which might be due to the same problem and I'm hoping you guys might be able to tell me where they are coming from. Rattle 1: https://youtu.be/pNKqcDzrE7I This rattle happens every time I turn off the car. Rattle 2: https://youtu.be/L27mwmH6pHg This rattle happens infrequently, maybe every 10 times I drive the car. I haven't been able to capture it myself since it always starts while I'm driving. Sometimes it's quite like in the video and sometimes it gets quite a lot louder. The whirring speeds up with more revs and it usually made a lot quieter if I turn off the AC. Do you think these noises are related? Is it something wrong with the AC? The car is a 2012 F31 330d
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04-17-2017, 12:20 AM	#2
Soul_Glo Major General 13347 Rep 7,484 Posts Drives: G20 Join Date: May 2013 Location: Manhattan, NYC iTrader: (1)	Any fault codes?
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04-17-2017, 02:51 AM	#3
owlsarepretty036 New Member 3 Rep 11 Posts Drives: Honda Civic Join Date: Apr 2017 Location: New York iTrader: (0)	Unfortunately, I can not help you! I'm not good at this. Sorry!(( myloweslife Last edited by owlsarepretty036; 05-14-2017 at 07:44 PM..
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04-17-2017, 05:49 PM	#5
Smee Colonel 505 Rep 2,152 Posts Drives: BMW M4 F83 Join Date: Aug 2016 Location: Norfolk iTrader: (0)	Gonna say number 2 seems like aircon noise to me. mine drives me nuts __________________ Current: BMW M4 F83 - Mods : Pedal Covers, LCI Stereo facia Retrofit and Carbon Rear corner covers Old: F32 435d M Sport - Mods : HR Sport Springs, 20" Veemann V-FS23 in Gun Metal, M Performance Body Kit, Pedal Covers, Eurspec CF Mirror Caps, More-BHP remap 364 BHP 741 NM, M4 Under Chassis Brace, 15mm Rear ARB, 8.8" Screen Retrofit and LCI Stereo facia Retrofit
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04-18-2017, 04:18 AM	#6
creepy coupe Lieutenant General 1867 Rep 13,043 Posts Drives: BMW M340I G20 Join Date: Aug 2007 Location: UK iTrader: (2) Garage List 2015 BMW 435d [0.00] 2009 335i [0.00]	The aircon won't be working at 2.5°. __________________ -------------------------------------------------------------- Current car.M240i. Previous.MINI JCW. E92 325i. 435d M235i.M135i. 635d Coupe, E92 M3 manual, E92 M3 DCT Competition Pack. E92 335i, Porsche Cayman S Gen2, 135i Coupe. E92 320d, MK5 R32. MK5 Golf GTi,MK5 Golf GT-TDI,E46 318Ci.
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04-18-2017, 05:12 AM	#7
Smee Colonel 505 Rep 2,152 Posts Drives: BMW M4 F83 Join Date: Aug 2016 Location: Norfolk iTrader: (0)	aircon/heating/fan are pretty much always on. press the fan button down until its off and see if the noise on video 2 goes away. mine does can hear it out the top centre vent __________________ Current: BMW M4 F83 - Mods : Pedal Covers, LCI Stereo facia Retrofit and Carbon Rear corner covers Old: F32 435d M Sport - Mods : HR Sport Springs, 20" Veemann V-FS23 in Gun Metal, M Performance Body Kit, Pedal Covers, Eurspec CF Mirror Caps, More-BHP remap 364 BHP 741 NM, M4 Under Chassis Brace, 15mm Rear ARB, 8.8" Screen Retrofit and LCI Stereo facia Retrofit
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04-18-2017, 05:27 AM	#8
Cuninho Private First Class 37 Rep 101 Posts Drives: BMW 435i Join Date: Apr 2016 Location: Manchester iTrader: (0)	I had a similar noise to the first one, it was always when I turned off or on the AC. Pulled all the head unit etc. out to install a new Alpine audio upgrade, when I put it all back together the noise had gone...
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