BimmerFest BMW Forum banner

Noise after shutdow

2K views 9 replies 6 participants last post by  jwchi 
#1 · (Edited)
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!
 
#6 ·
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.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top