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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 11-29-2012, 02:55 PM
jwchi jwchi is offline
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Noise after shutdow

Guys, I need a little help on a noise that I'm hearing after shutting down the engine. i have a 2001 330i (e46). Here's a link to the sound file to hear what I'm talking about......The sound is around 6 seconds in and again at 22.




Any thoughts appreciated!

Last edited by jwchi; 11-30-2012 at 07:46 AM.
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  #2  
Old 11-29-2012, 03:17 PM
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Fast Bob Fast Bob is offline
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Link is dead, and this is not the X5 Forum....
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Old 11-29-2012, 05:52 PM
jwchi jwchi is offline
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2001 330i (e46)

corrected link, thanks

Last edited by jwchi; 11-30-2012 at 07:47 AM.
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  #4  
Old 11-30-2012, 07:22 AM
E46_Ci E46_Ci is offline
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Might be better to do a YouTube video of the sound... I, for one, am not downloading a file from your Google docs.
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Old 11-30-2012, 07:47 AM
jwchi jwchi is offline
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Old 11-30-2012, 08:03 AM
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ahull ahull is offline
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The woosh sound is your CCV letting off vacuum pressure. It's normal - mine's done it for as long as I can remember. If it starts to sound like a fog horn, chewbacca, dying duck, then it's clogged and needs replacing. Most people replace around 80-100k as preventive maint as they tend to clog and the hoses get brittle and leak.
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Old 11-30-2012, 08:05 AM
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hexy27 hexy27 is offline
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^^^^^+1.......vacuum purge and totally normal
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Old 11-30-2012, 08:22 AM
joegr joegr is offline
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Quote:
Originally Posted by hexy27 View Post
^^^^^+1.......vacuum purge and totally normal
So, since mine doesn't make this noise at shutdown, is this a sign that mine has a defect?
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Old 11-30-2012, 12:41 PM
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hexy27 hexy27 is offline
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Not necessarily.....the sure sign of a bad CVV is when that "whoosh" sound turns more to a foghorn noise. There are tests you can perform to test yours out and directions are either in the WIKI or can be found by searching similar threads on this site.
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Old 12-01-2012, 12:01 PM
jwchi jwchi is offline
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Thanks for the help guys!
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