SOLVED! Rattle from Exhaust

Zirenz2006 · 08-14-2015, 08:36 AM

My 2012 328i has a rattling noise coming from the exhaust that does not go away.

EDIT 8/26

I figured out what's wrong. The metal clip/spring that connects the actuator to the flap is gone! I have no idea how that happened but basically the flap has been free to move around at will.

Actual part is: Fixing bow 18307620323 and I can get it online for about $10

In the meantime I have secured the flap open with metal wire and the noise is gone.

KGB_123_99 · 08-14-2015, 08:48 AM

Does yours do it all the time?

I have a rattle somewhere in the exhaust but it depends on temperature and flap position. I've driven several 328's that have the same intermittent rattle around 2500 rpm.

Zirenz2006 · 08-14-2015, 09:20 AM

I use to always get it due to temperature but after the car warmed up it would be less noticeable. It seems now that even after running a while the rattle is louder than it use to be when stopped and idling.

eric@helix · 08-14-2015, 09:32 AM

Time for one of these:

Zirenz2006 · 08-26-2015, 01:46 PM

bump, edited

In case anyone has similar problem

Johannes356 · 09-03-2015, 07:22 AM

Timely post. I am still under warranty but this just started yesterday for me. I have a service appointment next Friday, but I got no issue knocking it out myself. What is the method for securing the flap open in the meantime? I have not had a chance to jack up the car yet and see exactly how the flap works.

DrivenByE30 · 09-11-2015, 11:21 PM

No need to jack up the car.... Just bend over and you will see it.

I had the same issue a couple of years back.

Easy fix

hermes52 · 03-15-2022, 08:33 PM

Hi,
Could someone post the instructions on how to fix this issue.
Thanks.

John in VA · 03-27-2022, 09:41 AM

Quote:

Originally Posted by hermes52

Hi, Could someone post the instructions on how to fix this issue.Thanks.

The part diagram shows how/where the part fits.
https://www.realoem.com/bmw/enUS/sho...74#18307620323

08-14-2015, 08:36 AM	#1
Zirenz2006 Brigadier General 1542 Rep 4,558 Posts Drives: G80 M3 Comp IOMG Join Date: Aug 2006 Location: US - NE iTrader: (0)	SOLVED! Rattle from Exhaust - '12 F30 My 2012 328i has a rattling noise coming from the exhaust that does not go away. EDIT 8/26 I figured out what's wrong. The metal clip/spring that connects the actuator to the flap is gone! I have no idea how that happened but basically the flap has been free to move around at will. Actual part is: Fixing bow 18307620323 and I can get it online for about $10 In the meantime I have secured the flap open with metal wire and the noise is gone. __________________ Current: 2021 ///M3 Competition Isle of Man Green Ordered: 2024 ///M2 Zandvoort Blue Past: 2018 X3 ///M40i \| 2012 *328i* \| 2009 *335i* \| 2007 *335i Coupe* \| 2005 *545i* \| 2001 *325i* Last edited by Zirenz2006; 08-27-2015 at 06:11 AM..
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08-14-2015, 08:48 AM	#2
KGB_123_99 Captain 404 Rep 962 Posts Drives: '17 330ix M-Sport, '09 528ix Join Date: Apr 2014 Location: Montreal, QC iTrader: (0)	Does yours do it all the time? I have a rattle somewhere in the exhaust but it depends on temperature and flap position. I've driven several 328's that have the same intermittent rattle around 2500 rpm.
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08-14-2015, 09:20 AM	#3
Zirenz2006 Brigadier General 1542 Rep 4,558 Posts Drives: G80 M3 Comp IOMG Join Date: Aug 2006 Location: US - NE iTrader: (0)	I use to always get it due to temperature but after the car warmed up it would be less noticeable. It seems now that even after running a while the rattle is louder than it use to be when stopped and idling. __________________ Current: 2021 ///M3 Competition Isle of Man Green Ordered: 2024 ///M2 Zandvoort Blue Past: 2018 X3 ///M40i \| 2012 *328i* \| 2009 *335i* \| 2007 *335i Coupe* \| 2005 *545i* \| 2001 *325i* Last edited by Zirenz2006; 08-14-2015 at 09:31 AM..
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08-14-2015, 09:32 AM	#4
eric@helix 208 Rep 1,161 Posts Drives: 01 M Coupe, 08 135i, '12 328i Join Date: Jul 2007 Location: Philadelphia iTrader: (0)	Time for one of these:
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08-26-2015, 01:46 PM	#5
Zirenz2006 Brigadier General 1542 Rep 4,558 Posts Drives: G80 M3 Comp IOMG Join Date: Aug 2006 Location: US - NE iTrader: (0)	bump, edited In case anyone has similar problem __________________ Current: 2021 ///M3 Competition Isle of Man Green Ordered: 2024 ///M2 Zandvoort Blue Past: 2018 X3 ///M40i \| 2012 *328i* \| 2009 *335i* \| 2007 *335i Coupe* \| 2005 *545i* \| 2001 *325i*
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09-03-2015, 07:22 AM	#6
Johannes356 New Member 0 Rep 9 Posts Drives: 2012 328i Join Date: Oct 2012 Location: Cincinnati, Oh iTrader: (0)	Timely post. I am still under warranty but this just started yesterday for me. I have a service appointment next Friday, but I got no issue knocking it out myself. What is the method for securing the flap open in the meantime? I have not had a chance to jack up the car yet and see exactly how the flap works.
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09-11-2015, 11:21 PM	#7
DrivenByE30 Brigadier General 592 Rep 3,870 Posts Drives: '12 F30 Lux 335i 6MT Join Date: Jun 2011 Location: OC - SoCal iTrader: (0)	No need to jack up the car.... Just bend over and you will see it. I had the same issue a couple of years back. Easy fix
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03-15-2022, 08:33 PM	#8
hermes52 New Member 2 Rep 8 Posts Drives: 2014 BMW 328i Join Date: Feb 2022 Location: Philadelphia iTrader: (0)	Hi, Could someone post the instructions on how to fix this issue. Thanks.
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