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boostfix boostfix is offline
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Join Date: Nov 2006
Location: Vancouver, BC Canada
Posts: 255
Visual inspection of the heat flaps is the way to go IMHO. If the flaps are working properly with the heat controller servo motor then you might also want to check the air temp sensor. This is what was causing my heat problem of too much heat on the low settings. Note the round disc between the steering column housing and the ventilation controls in the pic below. This is the air intake for a small fan that draws cabin air across a thermister. I took mine out to test its function and discovered that the thermister was so covered in dust from years of use that it was not able to read the air temp properly. All I did was clean it with alcohol and my heat system was working!
88 930 blk/gry

Last edited by boostfix; 11-02-2008 at 09:34 PM..
Old 11-02-2008, 09:19 PM
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