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Owner, Callas Rennsport
Join Date: Mar 2006
Location: Los Angeles, CA
Posts: 187
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Most likely, Don is correct on this. There is a small intake fan mounted on the back of the climate control unit/assembly that sucks interior air into the climate control unit NTC-II (Negative Temperature Sensor Coefficient #2) sensor to tell it the interior air temperature and adjust accordingly. I assume this is to cool off the NTC-II sensor inside the climate control unit itself once the car has been shut down.
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