View single post by subwoofer
 Posted: 05-28-2008 04:57 am
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Joined: 04-01-2008
Location: Sandefjord, Norway
Posts: 583
Investigated the matter a bit more yesterday. It would seem that my car has _both_ a mechincal valve and a vacuum valve. The hot/cold lever engages a vacuum switch when fully to the left, leading me to believe that the vacuum switch isn't necessary at all.