Rattling Exhaust Sound

Abenitez · 06-07-2011, 09:51 PM

Hey guys my 335i is just a hundred miles shy of 30K and I've been noticing an increasing loud clicking/rattling/clanking metal noise that seems to be coming from my factory exhaust. I thought maybe it had to do with the butterfly valve? But I'm not sure at all. I was reading up and I found something about a wastegate actuator failure? Does anyone have any information or past experiences? Anything helps. Thanks in advance!

jokergerm · 06-07-2011, 09:54 PM

Quote:

Originally Posted by BMWE92335i

Hey guys my 335i is just a hundred miles shy of 30K and I've been noticing an increasing loud clicking/rattling/clanking metal noise that seems to be coming from my factory exhaust. I thought maybe it had to do with the butterfly valve? But I'm not sure at all. I was reading up and I found something about a wastegate actuator failure? Does anyone have any information or past experiences? Anything helps. Thanks in advance!

Really?

Its the wastegate rattle that BMW designed to be normal so it will all drive us insane.................

Shih · 06-08-2011, 03:46 AM

if u still have the warranty, go back and get a new exhaust. I got mine installed for free when I do the fuel pump recall.

bkrM3 · 06-08-2011, 07:40 AM

Yeah it really could be the exhaust. When my valve went bad it was most noticeable on a cold start. You just had to start the car cold and let it sit until the idle clicked down to a lower rpm. Sounded like someone was rattling a can of nickels back in the left tip. Dealer replaced the exhaust, then I disabled the valve

Abenitez · 06-08-2011, 12:00 PM

Quote:

Originally Posted by bkr335

Yeah it really could be the exhaust. When my valve went bad it was most noticeable on a cold start. You just had to start the car cold and let it sit until the idle clicked down to a lower rpm. Sounded like someone was rattling a can of nickels back in the left tip. Dealer replaced the exhaust, then I disabled the valve

Haha ok thanks everyone will do!

pentaxis · 06-08-2011, 02:07 PM

Unplug the solenoid for the valve in the drivers side taillight access panel. Should fix the issue.

Abenitez · 06-08-2011, 09:56 PM

Quote:

Originally Posted by pentaxis

Unplug the solenoid for the valve in the drivers side taillight access panel. Should fix the issue.

I'll try it. Thanks

bkrM3 · 06-09-2011, 09:10 AM

Quote:

Originally Posted by BMWE92335i

I'll try it. Thanks

Note that unplugging it will not "fix" the issue by any means. If that valve rattling is actually your problem, disabling it will make it so the valve doesnt work and you wont hear it - but it will still be broken. If youre still under warranty (seems like you should be) and you want it to be fixed properly, just take it in.

THEN, after it gets fixed, disable the valve. Exhaust sounds better that way

etc335i · 06-10-2011, 11:56 PM

What is wrong with my car?

also loud rattle at 1:14

my bad for postin in your thread

Abenitez · 06-11-2011, 06:25 PM

Quote:

Originally Posted by pentaxis

Unplug the solenoid for the valve in the drivers side taillight access panel. Should fix the issue.

What is it supposed to do originally? What is it's function?

landau88 · 06-11-2011, 07:40 PM

I had the same sound coming out of my exhaust so I took it to the dealership. They replaced the muffler and now its fixed.

bkrM3 · 06-13-2011, 07:32 AM

Quote:

Originally Posted by erikf87

What is wrong with my car?

also loud rattle at 1:14

my bad for postin in your thread

Valve in the left exhaust is bad. Muffler will need to be replaced. Take it in if you're under warranty, or disable the valve if you're not.

ciomas · 06-13-2011, 07:44 AM

got first muffler replacement a few months after I picked up the car...just dropped it off at the dealers today for the exact same reason (after 11 months owning the car). The technician told me that he shouldnt be advising that but plugging the actuator out will probably fix it. Needless to say I will not be sattisfied with such solution...

06-07-2011, 09:51 PM	#1
Abenitez Second Lieutenant 23 Rep 197 Posts Drives: Black Sapphire E92 335is 2012 Join Date: Dec 2010 Location: Miami iTrader: (1) Garage List 2012 335is [0.00]	Rattling Exhaust Sound Hey guys my 335i is just a hundred miles shy of 30K and I've been noticing an increasing loud clicking/rattling/clanking metal noise that seems to be coming from my factory exhaust. I thought maybe it had to do with the butterfly valve? But I'm not sure at all. I was reading up and I found something about a wastegate actuator failure? Does anyone have any information or past experiences? Anything helps. Thanks in advance! __________________ 2012 E92 335is -M Sport Package- 19in M Rims- Black Sapphire Metallic/ Coral Red / Glaciar trim, Rear diffuser. Black Grille, 5% window tint. K&N drop in Air filter. Scarlett
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06-08-2011, 03:46 AM	#3
Shih Private First Class 11 Rep 190 Posts Drives: E92 335i Join Date: Sep 2007 Location: MA iTrader: (3)	if u still have the warranty, go back and get a new exhaust. I got mine installed for free when I do the fuel pump recall.
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06-08-2011, 07:40 AM	#4
bkrM3 Major 73 Rep 1,388 Posts Drives: E90 M3 Join Date: Apr 2010 Location: Main Line iTrader: (9) Garage List 2009 BMW M3 [9.50]	Yeah it really could be the exhaust. When my valve went bad it was most noticeable on a cold start. You just had to start the car cold and let it sit until the idle clicked down to a lower rpm. Sounded like someone was rattling a can of nickels back in the left tip. Dealer replaced the exhaust, then I disabled the valve __________________ E90 M3 Space/Fox/6MT E92 335i BSM/Saddle/6MT - Sold
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06-08-2011, 02:07 PM	#6
pentaxis Captain 30 Rep 685 Posts Drives: Space Grey E92 335i Join Date: Feb 2010 Location: Portland, OR iTrader: (3)	Unplug the solenoid for the valve in the drivers side taillight access panel. Should fix the issue.
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06-10-2011, 11:56 PM	#9
etc335i Trainee 27 Rep 385 Posts Drives: BUS PASS Join Date: May 2011 Location: El Salvador iTrader: (0)	What is wrong with my car? also loud rattle at 1:14 my bad for postin in your thread
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06-11-2011, 07:40 PM	#11
landau88 First Lieutenant 26 Rep 303 Posts Drives: 2007 335xi Join Date: Feb 2011 Location: Philadelphia iTrader: (0)	I had the same sound coming out of my exhaust so I took it to the dealership. They replaced the muffler and now its fixed.
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06-13-2011, 07:44 AM	#13
ciomas Captain 30 Rep 679 Posts Drives: M4 Join Date: Feb 2010 Location: 3city PL iTrader: (0)	got first muffler replacement a few months after I picked up the car...just dropped it off at the dealers today for the exact same reason (after 11 months owning the car). The technician told me that he shouldnt be advising that but plugging the actuator out will probably fix it. Needless to say I will not be sattisfied with such solution... __________________ 335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp.
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