Pelican Parts Forums - Help identifying an under dash part

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Help identifying an under dash part

I posted recently with a query about odd noises from the passenger footwell after replacing my dash. After eliminating the suggested suspects, I traced it to the part shown below. It is a black housing to which the rubber hose from the temperature sensor in the dash on the passenger side connects (that is the hose in the picture).

What is this piece? I think that it might be the temperatiure sensor. Additionally, does it have a fan in it, as it sounds very much like there is a fan that is out of balance?

Many thanks.

http://forums.pelicanparts.com/uploa...1205293786.jpg
http://forums.pelicanparts.com/uploa...1205293798.jpg

Climate control sniffer for interior temp. Consists of a motor, fan, and thermistor.