Motor noise in rear drivers side wheel well??

ProsDoc · 04-10-2012, 09:03 PM

As the title says, after driving the car hard and shutting her down, I hear a motor-type, whirling noise that seems to be coming from the rear drivers side wheel well. It's not loud by any means, but when I park in my garage, it's definitely audible. Anyone have a clue what it might be?? Exhaust or brake cooling mechanism??

kmarei · 04-10-2012, 09:56 PM

Fuel pump?

ProsDoc · 04-10-2012, 10:32 PM

MAybe...but why would it continue to make noise once the car is turned off??

C|3R1C · 04-10-2012, 10:38 PM

Yea I hear that too... I figure its something just tuning down for rest. If it is the fuel pump, maybe to relieve pressure?

tibra1 · 04-10-2012, 11:15 PM

The rotors ping and clank as they cool..if the key is close by it could be the fuel pump clicking on..also engine makes some noise from the metal contracting while cooling..this car makes all sorts of noises when you turn it off..all normal

ProsDoc · 04-10-2012, 11:45 PM

hmm....doesn't sound at all like metal cooling/pinging. It's definitely some sort of motor or mechanism that activated

Dellort_M3 · 04-11-2012, 02:27 AM

Im subscribed. Hope someone has a definite answer.

MilehighM3 · 04-11-2012, 11:42 PM

It's a vacuum pump thats used to maintain proper vacuum levels, mainly for brake assist. Pump your brake pedal and you'll hear it kick on. Engine running of course. It's there in case you're at wide open throttle for too long and the brake assist may not be sufficient when you need it.

04-10-2012, 09:03 PM	#1
ProsDoc Enlisted Member 1 Rep 32 Posts Drives: E92 M3 Join Date: Jan 2012 Location: Chicago,IL iTrader: (0)	Motor noise in rear drivers side wheel well?? As the title says, after driving the car hard and shutting her down, I hear a motor-type, whirling noise that seems to be coming from the rear drivers side wheel well. It's not loud by any means, but when I park in my garage, it's definitely audible. Anyone have a clue what it might be?? Exhaust or brake cooling mechanism??
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04-10-2012, 09:56 PM	#2
kmarei Major General 686 Rep 6,845 Posts Drives: 2018 Audi RS5 coupe Join Date: Jul 2008 Location: Reston, VA iTrader: (34) Garage List 2018 Audi RS5 [0.00]	Fuel pump? __________________
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04-10-2012, 10:32 PM	#3
ProsDoc Enlisted Member 1 Rep 32 Posts Drives: E92 M3 Join Date: Jan 2012 Location: Chicago,IL iTrader: (0)	MAybe...but why would it continue to make noise once the car is turned off??
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04-10-2012, 10:38 PM	#4
C\|3R1C So Kewl Guy 49 Rep 619 Posts Drives: 2010 E93 M3 DCT Join Date: Sep 2011 Location: Los Angeles iTrader: (3)	Yea I hear that too... I figure its something just tuning down for rest. If it is the fuel pump, maybe to relieve pressure? __________________ 2010 E93 M3 / MS Catless X-Pipe / AA Catback / Vorsteiner Vented Hood and Bootlid E93 Trunk / ADV1 7.1 Wheels GB / LS3 LED Lights / Harrop Supercharger
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04-10-2012, 11:15 PM	#5
tibra1 Banned 127 Rep 6,773 Posts Drives: 2011 ZCP M3 - 2007 335i crashd Join Date: Apr 2009 Location: NYC iTrader: (4)	The rotors ping and clank as they cool..if the key is close by it could be the fuel pump clicking on..also engine makes some noise from the metal contracting while cooling..this car makes all sorts of noises when you turn it off..all normal
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04-10-2012, 11:45 PM	#6
ProsDoc Enlisted Member 1 Rep 32 Posts Drives: E92 M3 Join Date: Jan 2012 Location: Chicago,IL iTrader: (0)	hmm....doesn't sound at all like metal cooling/pinging. It's definitely some sort of motor or mechanism that activated
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04-11-2012, 02:27 AM	#7
Dellort_M3 Lieutenant 16 Rep 441 Posts Drives: 2011 E92 M3 Join Date: Dec 2011 Location: Canada iTrader: (1)	Im subscribed. Hope someone has a definite answer. __________________ 2011 Alpine White/Fox Red 6MT E92 M3 \| Active Stage 2 w/Meth \| KW Clubsport \| OSS \| Challenge Front Lip \| Vorsteiner Type 2 Rear Diffuser and Bootlid \| Brembo \| Recaro \| Akrapovic Slip-On \| Challenge Race+ X-Pipe \| Vossen CV3 \| OEM 359M \| TE37SL Last edited by Dellort_M3; 04-16-2012 at 01:57 PM..
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04-11-2012, 11:42 PM	#8
MilehighM3 Brigadier General 915 Rep 3,456 Posts Drives: Harrop E90 M3 Join Date: May 2011 Location: Colorado Springs iTrader: (14) Garage List 2009 E90 M3 [6.50]	It's a vacuum pump thats used to maintain proper vacuum levels, mainly for brake assist. Pump your brake pedal and you'll hear it kick on. Engine running of course. It's there in case you're at wide open throttle for too long and the brake assist may not be sufficient when you need it.
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