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- - 2004 volvo S40 (https://volvoforums.com/forum/volvo-s40-11/2004-volvo-s40-49617/)

lito1947

01-24-2011 06:11 PM

2004 volvo S40

check engine light on and when running, whirring sound appears. One mechanic says breather box to be replaced. Please advise, Thanks a lot.

Mad Matt

01-24-2011 06:42 PM

Need a new PCV system (Breather Box is part of the PCV).
Lots of info about it on Swedespeed.

AutoNaut

01-24-2011 10:19 PM

Is your car a 2004.5 (newer body style)?
Stan

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