Exhaust rattle

DJsirkit · 03-01-2017, 12:36 AM

nobody?

eluded · 03-01-2017, 03:05 AM

My car does the same thing

TheBlackTruth · 07-09-2017, 11:49 AM

2013 335i xDrive

TheBlackTruth · 07-09-2017, 12:29 PM

Didn't find much useful in other threads so decided to try and tackle the problem myself. This is by no means a permanent solution but it got rid of the rattle!

Solution: Electric tape!

eluded · 07-09-2017, 06:49 PM

Quote:

Originally Posted by TheBlackTruth

Didn't find much useful in other threads so decided to try and tackle the problem myself. This is by no means a permanent solution but it got rid of the ....

High temperature electrical tape?

Dinan_Rated · 07-10-2017, 11:22 PM

Quote:

Originally Posted by TheBlackTruth

Didn't find much useful in other threads so decided to try and tackle the problem myself. This is by no means a permanent solution but it got rid of the rattle!

Solution: Electric tape!

Update

asuh1991 · 07-11-2017, 12:22 AM

i think your tips are cracked, should be replaced under warranty

radeohedca · 07-18-2017, 06:41 AM

Check for a loose oxygen sensor. My car sounded like a tin can POS. After much investigation I found that the wire going to the 02 sensor was clanging off the exhaust pipe and the sensor itself was loose. It resonated through the entire exhaust system.

ChubbyWilly · 07-18-2017, 07:37 AM

Quote:

Originally Posted by Austinformedude

Fixed! Finally convinced the dealer to replace the muffler assembly under warranty. This completely fixed the problem! It appears that sometimes the baffles inside the muffler become detached and rattle inside when warm (bad welds?) So if your problem is not with the flap, or heat shields, the next step would be replacing the muffler.

Just do an exhaust delete!

shivaswrath · 07-18-2017, 08:56 AM

it's the flap, it should be replaced under warranty. Contact BMW central for this.

redbullfan · 07-19-2017, 09:56 AM

The clip for the exhuast flap cost from $5-$8 at the stealership, and I bought one and replaced it myself and it only took 20 min. I also did my buddies 328i which had the same problem

Paul13F30 · 07-22-2017, 09:07 PM

Quote:

Originally Posted by redbullfan

The clip for the exhuast flap cost from $5-$8 at the stealership, and I bought one and replaced it myself and it only took 20 min. I also did my buddies 328i which had the same problem

I confirm this. The valve rattle is usually caused by a pin connecting the actuator to the valve going missing. According to my SA, it's a common problem. Luckily, the part is $8 and 20 minutes is all you need to replace it.

MacklinUSOB · 08-15-2017, 12:25 PM

Quote:

Originally Posted by Paul13F30

I confirm this. The valve rattle is usually caused by a pin connecting the actuator to the valve going missing. According to my SA, it's a common problem. Luckily, the part is $8 and 20 minutes is all you need to replace it.

Does anyone by chance have a BMW part number for that little guy?

This rattle drives me insane, ecstatic to know that I can fix it for 8 bucks.

WallySlash · 08-15-2017, 05:18 PM

18307620323. Fixing bow.

www.realoem.com

DLeMs · 09-04-2017, 12:28 PM

Has anyone figured out how to get the replacement fixing bow into the slots? The slots don't line up exactly parallel to each other. I've been trying to install the replacement but haven't had any luck. Any advice would be appreciated.

happygilmore99 · 05-12-2018, 03:43 PM

I just did this myself today. If you remove the actuator controller on the right by unplugging it and loosening the 3 bolts, you can line up the new spring in the slots and then install the actuator controller again. Use a 10mm socket to loosen two of the bolts. I didn't have enough clearance for a socket wrench for one of the bolts so I used a crescent wrench. Hope this tip helps someone!

Ashhong · 05-29-2018, 07:45 PM

Quote:

Originally Posted by Paul13F30

I confirm this. The valve rattle is usually caused by a pin connecting the actuator to the valve going missing. According to my SA, it's a common problem. Luckily, the part is $8 and 20 minutes is all you need to replace it.

Sorry for the bump but my car recently started making this noise and it's just embarrassing. It's not at cold starts either because I heard it while waiting at a drive thru and thought it was the buildings AC or something. So loud. It goes away when parked though for the most part and I only hear it when in drive and holding the brake.

Anyway, my question is, is the issue that this horseshoe shaped pin in the pic is missing? So if I look under my car I should see a missing pin?

Ikester19 · 05-30-2018, 04:05 AM

My car has the same issue which I noticed this morning on startup,it was so loud and lasted a few minutes until the car warmed up a bit then went away. Sounded like a 20 yr old rattling Camry!

Will have to contact the dealer and hopefully get it repaired under warranty.

Very annoyed!

Ashhong · 05-30-2018, 10:50 AM

Quote:

Originally Posted by Ikester19

My car has the same issue which I noticed this morning on startup,it was so loud and lasted a few minutes until the car warmed up a bit then went away. Sounded like a 20 yr old rattling Camry!

Will have to contact the dealer and hopefully get it repaired under warranty.

Very annoyed!

Try rolling down a window at a stop sign after driving. Is it completely gone?

Ikester19 · 05-31-2018, 04:34 PM

Quote:

Originally Posted by Ashhong

Try rolling down a window at a stop sign after driving. Is it completely gone?

Yes sound went away a few minutes after start up. The next morning I started the car (cold start) but the noise was not there!

So not sure why the loud rattling sound would be there on one day but not the next. Will have to monitor and see if it recurs

Paul13F30 · 06-02-2018, 11:10 PM

Quote:

Originally Posted by Ashhong

Quote:

Originally Posted by Paul13F30

I confirm this. The valve rattle is usually caused by a pin connecting the actuator to the valve going missing. According to my SA, it's a common problem. Luckily, the part is $8 and 20 minutes is all you need to replace it.

Sorry for the bump but my car recently started making this noise and it's just embarrassing. It's not at cold starts either because I heard it while waiting at a drive thru and thought it was the buildings AC or something. So loud. It goes away when parked though for the most part and I only hear it when in drive and holding the brake.

Anyway, my question is, is the issue that this horseshoe shaped pin in the pic is missing? So if I look under my car I should see a missing pin?

That is correct. If the pin is missing, it's the valve inside your exhaust pipe that's causing the rattle.

TwinScroll18 · 08-09-2018, 09:06 AM

Quote:

Originally Posted by Ikester19

Yes sound went away a few minutes after start up. The next morning I started the car (cold start) but the noise was not there!

So not sure why the loud rattling sound would be there on one day but not the next. Will have to monitor and see if it recurs

I have a similar issue where there is no rattle in the morning, but in the afternoon when I leave work, it's there. The fixing bow is still attached, so that can't be the cause. Were you able to resolve your problem?

If I just zip tie the bow in its open position, would I get any dash warnings if I don't remove the electronic plug?

03-01-2017, 12:36 AM	#23
DJsirkit Private First Class 16 Rep 106 Posts Drives: BMW 428i x-Drive M-sport Join Date: Dec 2016 Location: Chicago iTrader: (0)	nobody? __________________ 2014 BMW 428i xDrive M-Sport
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03-01-2017, 03:05 AM	#24
eluded 2JZ-GTE 3005 Rep 3,986 Posts Drives: 340 6MT, 50e, others Join Date: Nov 2015 Location: Sofia iTrader: (0)	My car does the same thing __________________ A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.
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07-09-2017, 11:49 AM	#25
TheBlackTruth Registered 0 Rep 3 Posts Drives: 2013 F30 x-Drive Join Date: Feb 2016 Location: Chicago, IL iTrader: (0)	Similar or same issue here 2013 335i xDrive
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07-09-2017, 12:29 PM	#26
TheBlackTruth Registered 0 Rep 3 Posts Drives: 2013 F30 x-Drive Join Date: Feb 2016 Location: Chicago, IL iTrader: (0)	Didn't find much useful in other threads so decided to try and tackle the problem myself. This is by no means a permanent solution but it got rid of the rattle! Solution: Electric tape!
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07-11-2017, 12:22 AM	#29
asuh1991 Private First Class 128 Rep 187 Posts Drives: 335i, M4, RRS Autobiography Join Date: Nov 2013 Location: Canada iTrader: (0)	i think your tips are cracked, should be replaced under warranty
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07-18-2017, 06:41 AM	#30
radeohedca Private First Class 32 Rep 160 Posts Drives: 2013 320i Join Date: Oct 2010 Location: Toronto, Canada iTrader: (0)	Check for a loose oxygen sensor. My car sounded like a tin can POS. After much investigation I found that the wire going to the 02 sensor was clanging off the exhaust pipe and the sensor itself was loose. It resonated through the entire exhaust system.
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07-18-2017, 08:56 AM	#32
shivaswrath Brigadier General 649 Rep 4,323 Posts Drives: 2012 335i Join Date: Apr 2008 Location: Lost in NJ iTrader: (3)	it's the flap, it should be replaced under warranty. Contact BMW central for this. __________________ 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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07-19-2017, 09:56 AM	#33
redbullfan Captain 356 Rep 688 Posts Drives: 22 TR X3MC Join Date: Aug 2015 Location: New Jersey iTrader: (0) Garage List 2022 BMW X3MC [0.00]	The clip for the exhuast flap cost from $5-$8 at the stealership, and I bought one and replaced it myself and it only took 20 min. I also did my buddies 328i which had the same problem __________________ 2022 X3M Comp 2013 335i xDrive (Sold)
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08-15-2017, 05:18 PM	#36
WallySlash Private First Class 96 Rep 153 Posts Drives: 2014 428xi Sport Line Join Date: Jul 2017 Location: Keller, TX iTrader: (0) Garage List 2014 BMW 428xi [9.00]	18307620323. Fixing bow. www.realoem.com
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09-04-2017, 12:28 PM	#37
DLeMs Registered 0 Rep 3 Posts Drives: 328ix Join Date: Sep 2017 Location: NYC iTrader: (0)	Has anyone figured out how to get the replacement fixing bow into the slots? The slots don't line up exactly parallel to each other. I've been trying to install the replacement but haven't had any luck. Any advice would be appreciated.
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05-12-2018, 03:43 PM	#38
happygilmore99 Registered 0 Rep 1 Posts Drives: 2013 BMW 328i xDrive F30 Join Date: May 2018 Location: Pittsburgh, PA iTrader: (0)	I just did this myself today. If you remove the actuator controller on the right by unplugging it and loosening the 3 bolts, you can line up the new spring in the slots and then install the actuator controller again. Use a 10mm socket to loosen two of the bolts. I didn't have enough clearance for a socket wrench for one of the bolts so I used a crescent wrench. Hope this tip helps someone!
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05-30-2018, 04:05 AM	#40
Ikester19 Captain 2124 Rep 908 Posts Drives: G20 M340ix; F30 328i msport Join Date: Jun 2017 Location: Brisban iTrader: (0) Garage List 2018 330i LCI [0.00] 2020 G20 M340ix [0.00]	My car has the same issue which I noticed this morning on startup,it was so loud and lasted a few minutes until the car warmed up a bit then went away. Sounded like a 20 yr old rattling Camry! Will have to contact the dealer and hopefully get it repaired under warranty. Very annoyed!
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