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jwchi 11-29-2012 02:55 PM

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.

Click to hear

Any thoughts appreciated!

Fast Bob 11-29-2012 03:17 PM

Link is dead, and this is not the X5 Forum....

jwchi 11-29-2012 05:52 PM

2001 330i (e46)

corrected link, thanks Click to hear

E46_Ci 11-30-2012 07:22 AM

Might be better to do a YouTube video of the sound... I, for one, am not downloading a file from your Google docs.

jwchi 11-30-2012 07:47 AM

YouTube Link

ahull 11-30-2012 08:03 AM

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.

hexy27 11-30-2012 08:05 AM

^^^^^+1.......vacuum purge and totally normal

joegr 11-30-2012 08:22 AM


Originally Posted by hexy27 (Post 7223050)
^^^^^+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?

hexy27 11-30-2012 12:41 PM

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.

jwchi 12-01-2012 12:01 PM

Thanks for the help guys! :thumbup:

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