Rattling sound when letting off gas: Wastegate problem? - BMW 3-Series (E90 E92) Forum

Verbatim · 12-05-2012, 04:11 PM

My car is making a rattling snare sound when i let off the gas when either in manual mode (drive) or parking and revving the engine. The sound gets less aggressive as the rpms drop down, and it goes away somewhere between 1200-1700 rpms. There is no rattling at idle.

Any ideas to what it is and do you think it is serious enough to get it checked out under CPO before it develops into a more serious problem?
Thanks!

Blackhawk36 · 12-05-2012, 04:25 PM

That is the noise. You have was wtegate rattle. Take it an get your new turbo. CPO isn't required. The wastegate warranty was extended to 6 years or 82,000 miles. You are covered. It won't get more serious, just more noisey.

tizzyd · 12-05-2012, 04:28 PM

yep, sounds like wastegate rattle to me, my car only does it when cold though...

Verbatim · 12-05-2012, 05:01 PM

I'm worried they're going to turn me away because it's not serious? Any thoughts?
I'd be glad to get new turbos

Blackhawk36 · 12-05-2012, 05:12 PM

That noise is obvious. They will try a software update first. If that doesn't fix it, they will replace the offending turbo.

DrAmazing · 12-05-2012, 05:20 PM

my 07 sounds exactly the same way but im in canada. from what i hear, we dont get ours replaced or even a smile out of bmw for this

straightcashhomie · 12-05-2012, 06:19 PM

Quote:

Originally Posted by Verbatim

My car is making a rattling snare sound when i let off the gas when either in manual mode (drive) or parking and revving the engine. The sound gets less aggressive as the rpms drop down, and it goes away somewhere between 1200-1700 rpms. There is no rattling at idle.

Any ideas to what it is and do you think it is serious enough to get it checked out under CPO before it develops into a more serious problem?
Thanks!

damn only 48k miles

good luck brotha hope everything goes well.

hookandpull · 12-06-2012, 06:23 PM

I have the rattle and im at 79k miles... I made an appointment with BMW of Seattle but I dont want them screwing around. I have a trip to AZ for christmas that I plan on taking my bimmer to and if they try the software update BS on me and the turbo's go out after 82k on me I am going to club baby seals!

stopper · 12-06-2012, 06:50 PM

Without a doubt, that's our world-famous WG rattle. Your noise is plainly obvious; I'd doubt the dealer you bring it to would try to pull the "it's normal" spiel.

There is a middle-ground alternative that dealers may try depending on the diagnosis though. The software fix is the first. After that they may adjust the waste gate actuators to try and get rid of the noise.

If that doesn't work (or that fix doesn't last), that's when I've seen them pull the snails and completely replace them.

Good luck op, here's to brand new turbos!

KwlAznKid · 12-06-2012, 06:51 PM

yep, i had that problem on my 335i too, but the dealer refused to replace it when i took it in, said it was "normal" and since i wasn't under warranty they told me to take a hike! good luck man

Kolyan2k · 12-06-2012, 06:56 PM

mine went at 40k, got it replaced under CPO

jmb85 · 12-06-2012, 06:56 PM

Mine had the SAME noise. It's the wastegate. I took it to the dealer and they replaced the turbos.

Josh1a1h · 12-07-2012, 05:02 AM

I just had my turbos replaced, and I still have the same rattle! And it has got louder since I put my DPS on.

The sound goes away completely when the car is warm though???

///Mposter · 12-07-2012, 09:37 AM

Yeah mine happened at 35k miles and was replaced at 40k miles. I hope to get another 40k+ out of them. That is what I was dealing with. I was trying to deal with it for 6 months hoping it would go away , ( yeah right) but really thinking of getting a new car. Anyway I was able to get replacement turbos. Just note that the reason why the dealer turns away most people is because the check engine light for reduced power is the big sign that it's failed. Its easier for them to justify the problem with paper print out results. Also read the service bulletin, it gives the test requirements . Rattle clank at 3500 rpm 5-6 times in a row while not in gear.

Kolyan2k · 12-07-2012, 12:19 PM

Quote:

Originally Posted by Josh1a1h

I just had my turbos replaced, and I still have the same rattle! And it has got louder since I put my DPS on.

The sound goes away completely when the car is warm though???

exhaust valve ?

Verbatim · 12-07-2012, 02:06 PM

Quote:

Originally Posted by Kolyan2k

exhaust valve ?

that's might be true
I have my exhaust valve actuator unplugged, so I know that's ruled out.

Josh1a1h · 12-08-2012, 12:26 PM

Even if I have it opened with the jb4?

elmannix08 · 03-09-2013, 07:50 PM

Quote:

Originally Posted by Blackhawk36

That is the noise. You have was wtegate rattle. Take it an get your new turbo. CPO isn't required. The wastegate warranty was extended to 6 years or 82,000 miles. You are covered. It won't get more serious, just more noisey.

mines has 59k with no warranty and its doing the same thing . soo ill be covered?

m54 · 03-09-2013, 09:00 PM

Its the wastegate actuators it might be both in most cases its just the rear. The wastegate actuarors are not covered under the extended warranty to 82k and their about$100 for both from BMW but they still want over $3 gs to install them due to it taking 30 hours of labor. Its nothing serious you won't loose power due to it its just annoying :/ If i were you i would just replace the rear wastegate actuator and leave it at that,it should take more then %50 of that rattle away other then that the front one is very hard to get to and they will rape you on it. gl

NH335i · 03-09-2013, 10:38 PM

I get a rattle when I start my 335i sometimes and when I shut it down.
Sounds very "tingy" but i cant put my finger on it yet. Got underneath the car during an oil change and didnt feel any loose heat shields.
Could it be this WG issue or are there other options?

PR3CI5N · 03-09-2013, 10:49 PM

When you have a rattle like this the first thing that will be replaced is the wastegate actuators. If your wastegates need replacing then BMW will have to replace the turbos which they don't like doing until they are 100% sure. New turbos would be nice but if the cars power still feels strong I doubt its your turbos. Good luck.

Verbatim · 03-10-2013, 11:46 PM

Quote:

Originally Posted by PR3CI5N

When you have a rattle like this the first thing that will be replaced is the wastegate actuators. If your wastegates need replacing then BMW will have to replace the turbos which they don't like doing until they are 100% sure. New turbos would be nice but if the cars power still feels strong I doubt its your turbos. Good luck.

why replace turbos? the wastegate actuators are removable and cheaper part
the problem is the labor

but yeah, it was obviously covered under CPO for anyone wondering.

12-05-2012, 04:11 PM	#1
Verbatim Colonel Drives: 2008 335i Join Date: Sep 2010 Location: Santa Clarita Posts: 2,554 iTrader: (0) Garage List 2008 BMW 335i [5.00]	Rattling sound when letting off gas: Wastegate problem? My car is making a rattling snare sound when i let off the gas when either in manual mode (drive) or parking and revving the engine. The sound gets less aggressive as the rpms drop down, and it goes away somewhere between 1200-1700 rpms. There is no rattling at idle. Any ideas to what it is and do you think it is serious enough to get it checked out under CPO before it develops into a more serious problem? Thanks! __________________ 2008 BMW 335i Sedan \| Sparkling Graphite \| Sport \| Premium \| Navigation \| Comfort Access \| Logic7 Golf Tee \| M3 Trunk Spoiler \| LED Angel Eyes \| 5000k Fogs \| Resonator Delete \| Black Kidney Grills \| Black Finisher Rods \| 35%/18% Tint \| Sealer Lip \| 12mm/20mm (F/R) Spacers \| White Wheels \| Black Lines
	Tweet

12-05-2012, 04:28 PM	#3
tizzyd Lieutenant Drives: 2011 E92 335i 6MT M-Sport Join Date: Feb 2008 Location: USA Posts: 457 iTrader: (0) Garage List 2011 335i Coupe [4.25]	yep, sounds like wastegate rattle to me, my car only does it when cold though... __________________ Current: 2011 335i Coupe, AW/Saddle, 6MT M-Sport. Mods: BMW Perf. Exhaust, BMW Perf. Power Kit, 19" BMW Performance Style 269 w/ Michelin PSS, painted reflectors, Tint (35% Front, 20% Rear) Ex: 2008 E92 328xi Black Saph./Coral Red 6MT ZSP ZPP

12-05-2012, 05:01 PM	#4
Verbatim Colonel Drives: 2008 335i Join Date: Sep 2010 Location: Santa Clarita Posts: 2,554 iTrader: (0) Garage List 2008 BMW 335i [5.00]	I'm worried they're going to turn me away because it's not serious? Any thoughts? I'd be glad to get new turbos __________________ 2008 BMW 335i Sedan \| Sparkling Graphite \| Sport \| Premium \| Navigation \| Comfort Access \| Logic7 Golf Tee \| M3 Trunk Spoiler \| LED Angel Eyes \| 5000k Fogs \| Resonator Delete \| Black Kidney Grills \| Black Finisher Rods \| 35%/18% Tint \| Sealer Lip \| 12mm/20mm (F/R) Spacers \| White Wheels \| Black Lines

12-06-2012, 06:51 PM	#10
KwlAznKid Major Drives: BMW/MERCEDES/PORSCHE Join Date: Jun 2005 Location: Irvine/Fremont, CA/ University of California San Diego Alum Posts: 1,397 iTrader: (2)	yep, i had that problem on my 335i too, but the dealer refused to replace it when i took it in, said it was "normal" and since i wasn't under warranty they told me to take a hike! good luck man __________________ BMW E92 328I / BMW E46 M3 / Mercedes Benz W209 CLK500 BMW E92 335I (sold) Porsche 996 911 C2 (sold) BMW E46 325CI (totaled)

12-07-2012, 05:02 AM	#13
Josh1a1h Major Drives: SB Pre-LCI 335i Join Date: Aug 2011 Location: North London Posts: 1,404 iTrader: (0)	I just had my turbos replaced, and I still have the same rattle! And it has got louder since I put my DPS on. The sound goes away completely when the car is warm though??? __________________ JB4, BMS DCI, VRSF DP, H&R/Koni Yellow Dampers. 1M Bumper & Carbon Splitter, LED Angel Eyes w/Full Blackout, M3 Skirts, CSL Boot & Carbon Diffuser,8.5/10.5 x 19" SSR Professor MS1 FOR LED ANGEL EYE RETRO-FITTING IN THE UK, GET IN TOUCH & VISIT THE LINK BELOW. https://www.facebook.com/LiteAngelsE92 .............. http://www.LiteAngels.co.uk

12-05-2012, 04:25 PM	#2
Blackhawk36 Second Lieutenant Drives: 2007 335i 6MT No iDrive Join Date: May 2009 Location: MD Posts: 212 iTrader: (0)	That is the noise. You have was wtegate rattle. Take it an get your new turbo. CPO isn't required. The wastegate warranty was extended to 6 years or 82,000 miles. You are covered. It won't get more serious, just more noisey.

12-05-2012, 05:12 PM	#5
Blackhawk36 Second Lieutenant Drives: 2007 335i 6MT No iDrive Join Date: May 2009 Location: MD Posts: 212 iTrader: (0)	That noise is obvious. They will try a software update first. If that doesn't fix it, they will replace the offending turbo.

12-05-2012, 05:20 PM	#6
DrAmazing Private First Class Drives: '07 335i Coupe JB4 Join Date: Apr 2012 Location: Halifax, Canada Posts: 101 iTrader: (0)	my 07 sounds exactly the same way but im in canada. from what i hear, we dont get ours replaced or even a smile out of bmw for this

12-06-2012, 06:23 PM	#8
hookandpull Lieutenant Drives: 2008 335i Sedan Join Date: Dec 2012 Location: Seattle WA Posts: 417 iTrader: (2)	I have the rattle and im at 79k miles... I made an appointment with BMW of Seattle but I dont want them screwing around. I have a trip to AZ for christmas that I plan on taking my bimmer to and if they try the software update BS on me and the turbo's go out after 82k on me I am going to club baby seals!

12-06-2012, 06:50 PM	#9
stopper Person of Interest Drives: A petrol-engine motorcar Join Date: Dec 2011 Location: CT Posts: 231 iTrader: (2)	Without a doubt, that's our world-famous WG rattle. Your noise is plainly obvious; I'd doubt the dealer you bring it to would try to pull the "it's normal" spiel. There is a middle-ground alternative that dealers may try depending on the diagnosis though. The software fix is the first. After that they may adjust the waste gate actuators to try and get rid of the noise. If that doesn't work (or that fix doesn't last), that's when I've seen them pull the snails and completely replace them. Good luck op, here's to brand new turbos!

12-06-2012, 06:56 PM	#11
Kolyan2k Brigadier General Drives: 2006 S2000 Join Date: Apr 2010 Location: Boston Posts: 3,466 iTrader: (1)	mine went at 40k, got it replaced under CPO

12-06-2012, 06:56 PM	#12
jmb85 Private First Class Drives: 335i Coupe Join Date: Sep 2012 Location: Jax NC Posts: 103 iTrader: (3)	Mine had the SAME noise. It's the wastegate. I took it to the dealer and they replaced the turbos.

12-07-2012, 09:37 AM	#14
///Mposter Macgyver Drives: 2007 e92 335i Join Date: Jun 2011 Location: Greensboring Posts: 100 iTrader: (0)	Yeah mine happened at 35k miles and was replaced at 40k miles. I hope to get another 40k+ out of them. That is what I was dealing with. I was trying to deal with it for 6 months hoping it would go away , ( yeah right) but really thinking of getting a new car. Anyway I was able to get replacement turbos. Just note that the reason why the dealer turns away most people is because the check engine light for reduced power is the big sign that it's failed. Its easier for them to justify the problem with paper print out results. Also read the service bulletin, it gives the test requirements . Rattle clank at 3500 rpm 5-6 times in a row while not in gear.

12-08-2012, 12:26 PM	#17
Josh1a1h Major Drives: SB Pre-LCI 335i Join Date: Aug 2011 Location: North London Posts: 1,404 iTrader: (0)	Even if I have it opened with the jb4? __________________ JB4, BMS DCI, VRSF DP, H&R/Koni Yellow Dampers. 1M Bumper & Carbon Splitter, LED Angel Eyes w/Full Blackout, M3 Skirts, CSL Boot & Carbon Diffuser,8.5/10.5 x 19" SSR Professor MS1 FOR LED ANGEL EYE RETRO-FITTING IN THE UK, GET IN TOUCH & VISIT THE LINK BELOW. https://www.facebook.com/LiteAngelsE92 .............. http://www.LiteAngels.co.uk

03-09-2013, 09:00 PM	#19
m54 Just to sweet Drives: 07 335i Join Date: May 2012 Location: New York Posts: 205 iTrader: (0)	Its the wastegate actuators it might be both in most cases its just the rear. The wastegate actuarors are not covered under the extended warranty to 82k and their about$100 for both from BMW but they still want over $3 gs to install them due to it taking 30 hours of labor. Its nothing serious you won't loose power due to it its just annoying :/ If i were you i would just replace the rear wastegate actuator and leave it at that,it should take more then %50 of that rattle away other then that the front one is very hard to get to and they will rape you on it. gl

03-09-2013, 10:38 PM	#20
NH335i CELTICS Drives: 335i Join Date: Dec 2012 Location: NH Posts: 106 iTrader: (0)	I get a rattle when I start my 335i sometimes and when I shut it down. Sounds very "tingy" but i cant put my finger on it yet. Got underneath the car during an oil change and didnt feel any loose heat shields. Could it be this WG issue or are there other options?

03-09-2013, 10:49 PM	#21
PR3CI5N need4speed Drives: 2010 E90 M 335i Join Date: Jun 2010 Location: California Posts: 950 iTrader: (8)	When you have a rattle like this the first thing that will be replaced is the wastegate actuators. If your wastegates need replacing then BMW will have to replace the turbos which they don't like doing until they are 100% sure. New turbos would be nice but if the cars power still feels strong I doubt its your turbos. Good luck. __________________ PERFORMANCE: JB4 G5 ISO, DCI, BMW performance exhaust, BMS 3" catless downpipes, H&R sport springs, Koni yellow shocks...E-85 COSMETICS: CF performance diffuser, CF kidney grille, CF wrapped interior, CF 335i, CF license plate frame, 12mm BMS spacers front/rear, Rear fenders rolled, Mtec white LED angel eyes, GP Thunder white fogs, Clear reflectors, Blacked out roundels

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search