Replaced Turbos, now hearing a noise.

badsector · 11-11-2011, 10:24 AM

Hey Guys,

About a month ago I had both of my Turbos replaced on my 2008 335i e92 the wastegates were rattling so luckly it was still under warranty and were replaced. Since then I am now out of warranty.

Yesterday after filling up I stepped on the pedal and shifted around 4500rpm then popped it into 2nd and kept going. After slowing down I could hear a hissing noise as I stepped on the gas pedal. I have an underground parking spot and could really hear this hissing sound when giving it gas. Not sure if it's something I had not noticed before or have I popped a vacuum line or something? Kind of sounds like a blow off valve which I do not have. Also wondering if the new turbos have some sort of warranty?

Any insight would be awesome.

Apogee · 11-11-2011, 10:25 AM

i would just check for leaks....did you see a drop in power?

badsector · 11-11-2011, 10:49 AM

Quote:

Originally Posted by Apogee

i would just check for leaks....did you see a drop in power?

Not that I have noticed. Seems ok, just can really hear the pssssssssss when giving it gas. Damn OCD. No engine lights or control messages. Would this trigger an engine light?

justinco · 11-11-2011, 10:53 AM

Possibly a boost or vacuum leak? You would notice a drop in power though, same with wastegate leak. I would think something drastic enough to be a noticeable loss in power would flip a code somewhere, but not sure.

badsector · 11-11-2011, 11:28 AM

Quote:

Originally Posted by justinco

Possibly a boost or vacuum leak? You would notice a drop in power though, same with wastegate leak. I would think something drastic enough to be a noticeable loss in power would flip a code somewhere, but not sure.

Yea that's what I'm guessing. Maybe the new vacuum line wasn't installed properly and came loose or something. These are brand new turbos.

tibra1 · 11-11-2011, 11:32 AM

Go back to the dealer..if they were replaced under warranty your are still covered for them to inspect issues with the install

badsector · 11-11-2011, 11:48 AM

Quote:

Originally Posted by tibra1

Go back to the dealer..if they were replaced under warranty your are still covered for them to inspect issues with the install

Agreed, it's going in on Monday now. I'm due for an oil change anyways.

http://www.youtube.com/watch?v=U-xkn4vcVW0

http://www.youtube.com/watch?v=VHtQPcnDaXk

http://www.youtube.com/watch?v=kue7baEcvjg

badsector · 11-14-2011, 02:06 PM

It was a pipe to the intercooler that had torn.

Royal Flush · 11-14-2011, 03:00 PM

Quote:

Originally Posted by badsector

About a month ago I had both of my Turbos replaced on my 2008 335i e92 the wastegates were rattling so luckly it was still under warranty and were replaced.

Somewhat off topic, but did you only hear them rattle during start-up or all the time?

justinco · 11-14-2011, 03:02 PM

Glad you figured it out. I had a similar issue with a (crappy) coupling that burst under boost. After that I used nothing but couplers from www.turbohoses.com and t-clamps.

badsector · 11-14-2011, 06:48 PM

Quote:

Originally Posted by Royal Flush

Somewhat off topic, but did you only hear them rattle during start-up or all the time?

No problem at all. Yea I could hear them all the time everytime a took my foot of the gas. It kept getting worse and worse, so I brought it in with 4 days left on my warranty. Funny thing was I phoned about a week prior to ask about the noise and was told it was normal. So I stuck my blackberry under my car to record the sound a scoured the internet to find the same noise. Found it on youtube under "dreaded wastegate rattle".

badsector · 11-14-2011, 06:50 PM

Quote:

Originally Posted by justinco

Glad you figured it out. I had a similar issue with a (crappy) coupling that burst under boost. After that I used nothing but couplers from www.turbohoses.com and t-clamps.

Awesome, thanks for the link. I will keep this book marked. I guarantee it will happen again.

Thanks again.

sw1183 · 03-26-2012, 10:00 AM

Hey badsector - this is my first post but I am having the same issue with the whoosing sound and low boost (3-4psi max)

Where was your leak on your intercooler?

Thanks in advance!

93 octane
jb4 map1 (just installed)
08 335xi

Wild Squid · 03-26-2012, 05:32 PM

Quote:

Originally Posted by badsector

No problem at all. Yea I could hear them all the time everytime a took my foot of the gas. It kept getting worse and worse, so I brought it in with 4 days left on my warranty. Funny thing was I phoned about a week prior to ask about the noise and was told it was normal. So I stuck my blackberry under my car to record the sound a scoured the internet to find the same noise. Found it on youtube under "dreaded wastegate rattle".

Wow you got pretty lucky being only 4 days from warranty expiration.

badsector · 04-19-2012, 02:47 PM

Quote:

Originally Posted by sw1183

Hey badsector - this is my first post but I am having the same issue with the whoosing sound and low boost (3-4psi max)

Where was your leak on your intercooler?

Thanks in advance!

93 octane
jb4 map1 (just installed)
08 335xi

Hey,

Sorry for the late reply. Some hose or something came loose at the intercooler.

AddictedToBavarian · 04-19-2012, 02:49 PM

Can wastegates start rattling again after turbos were replaced? Or was it just a flaw in the initial design?

11-11-2011, 10:24 AM	#1
badsector Private 6 Rep 72 Posts Drives: 2008 335i Coupe Join Date: May 2011 Location: Toronto, Ontario, canada iTrader: (0)	Replaced Turbos, now hearing a noise. Hey Guys, About a month ago I had both of my Turbos replaced on my 2008 335i e92 the wastegates were rattling so luckly it was still under warranty and were replaced. Since then I am now out of warranty. Yesterday after filling up I stepped on the pedal and shifted around 4500rpm then popped it into 2nd and kept going. After slowing down I could hear a hissing noise as I stepped on the gas pedal. I have an underground parking spot and could really hear this hissing sound when giving it gas. Not sure if it's something I had not noticed before or have I popped a vacuum line or something? Kind of sounds like a blow off valve which I do not have. Also wondering if the new turbos have some sort of warranty? Any insight would be awesome.
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11-11-2011, 10:25 AM	#2
Apogee Second Lieutenant 3 Rep 232 Posts Drives: 335d/Lancer Evolution X Join Date: Oct 2011 Location: Olympia, Washington iTrader: (1)	i would just check for leaks....did you see a drop in power? __________________ Zu bestrafen und zu versklaven
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11-11-2011, 10:53 AM	#4
justinco btr.life 51 Rep 353 Posts Drives: e36 Join Date: Jun 2011 Location: Colorado iTrader: (3) Garage List 1994 BMW 325is [0.00] 2009 BMW 335xi [10.00] 2005 BMW 330i ZHP [0.00]	Possibly a boost or vacuum leak? You would notice a drop in power though, same with wastegate leak. I would think something drastic enough to be a noticeable loss in power would flip a code somewhere, but not sure. __________________ 1994 BMW 325is - Project 325 HPDE/TT \| 2013 Scion FRS - Project FRS STX \| 2017 Subaru BRZ - Project BRZ STX
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11-11-2011, 11:32 AM	#6
tibra1 Banned 127 Rep 6,773 Posts Drives: 2011 ZCP M3 - 2007 335i crashd Join Date: Apr 2009 Location: NYC iTrader: (4)	Go back to the dealer..if they were replaced under warranty your are still covered for them to inspect issues with the install
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11-14-2011, 02:06 PM	#8
badsector Private 6 Rep 72 Posts Drives: 2008 335i Coupe Join Date: May 2011 Location: Toronto, Ontario, canada iTrader: (0)	It was a pipe to the intercooler that had torn.
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11-14-2011, 03:02 PM	#10
justinco btr.life 51 Rep 353 Posts Drives: e36 Join Date: Jun 2011 Location: Colorado iTrader: (3) Garage List 1994 BMW 325is [0.00] 2009 BMW 335xi [10.00] 2005 BMW 330i ZHP [0.00]	Glad you figured it out. I had a similar issue with a (crappy) coupling that burst under boost. After that I used nothing but couplers from www.turbohoses.com and t-clamps. __________________ 1994 BMW 325is - Project 325 HPDE/TT \| 2013 Scion FRS - Project FRS STX \| 2017 Subaru BRZ - Project BRZ STX
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03-26-2012, 10:00 AM	#13
sw1183 Private First Class 34 Rep 150 Posts Drives: 2013 BMW M6 Join Date: Mar 2012 Location: IN iTrader: (1) Garage List 2011 BMW 335xi [0.00]	Hey badsector - this is my first post but I am having the same issue with the whoosing sound and low boost (3-4psi max) Where was your leak on your intercooler? Thanks in advance! 93 octane jb4 map1 (just installed) 08 335xi
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04-19-2012, 02:49 PM	#16
AddictedToBavarian My other ride is a Bianchi Infinito 96 Rep 2,767 Posts Drives: Miss my E92 but love my E46 M3 Join Date: Apr 2011 Location: North Jersey iTrader: (2)	Can wastegates start rattling again after turbos were replaced? Or was it just a flaw in the initial design?
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