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Old 11-12-2011, 12:17 PM   #85
Nervous
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Join Date: Dec 2010
Location: MD, USA
Posts: 1,483
My Ride: 01 330CI 6MT ZSP EU3
Quote:
Originally Posted by dino71 View Post
Does anyone know what that little box (small connector goes to it) does that is clipped to the top of the fan housing?
A sensor of dirty air that controls A/C air recirculation in 'A' mode (automatic). If your air recirculation button is in 'A' mode it decides where to get air for your A/C - either from outside (no recirculation) or from inside (recirculation).
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