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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > What is considered out of tolerance for wastegate rattle



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      11-02-2012, 06:14 PM   #1
FNG
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What is considered out of tolerance for wastegate rattle

My car sounds like a diesel. The rattling/tapping sorta faint but i especially notice it in the morning in my parking stall which is right next to a wall which probably amplifies the sound. From what i read, it's most likely the wastegate rattle. At this point i would consider it a very slight nuisance and it doesn't bother me much but knowing that it will probably get worse i would rather take care of it sooner than later. So my question is what does BMW consider in/out of tolerance for the wastegate rattle. Will the service advisor look at me like a douche bag for such slight rattle?
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      11-02-2012, 08:23 PM   #2
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You have no issue taking this to the dealer. If you can hear they can hear it. Whether it is sufficient to have it replaced no one can say but I really doubt they will question you and maybe they can explain what is acceptable...
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      11-03-2012, 09:30 PM   #3
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Quote:
Originally Posted by FNG View Post
My car sounds like a diesel. The rattling/tapping sorta faint but i especially notice it in the morning in my parking stall which is right next to a wall which probably amplifies the sound. From what i read, it's most likely the wastegate rattle. At this point i would consider it a very slight nuisance and it doesn't bother me much but knowing that it will probably get worse i would rather take care of it sooner than later. So my question is what does BMW consider in/out of tolerance for the wastegate rattle. Will the service advisor look at me like a douche bag for such slight rattle?
They ALL rattle at start up. Thats not wastegate rattle. I gather that occurs at higher rpm.
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      11-03-2012, 09:54 PM   #4
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It might be considered okay if you only hear the rattle right after a cold startup. But if you can hear it after driving a few miles, take it to the dealership.
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