Diesel Posted January 27, 2005 Report Share Posted January 27, 2005 I have been searching the archives for my HVAC fan problem with my 1994 DeVille, but have not quite found it. I was hoping someone might be able to help me out. This winter, the blower fan has not been working most of the time when I need heat. Even when the engine warms up and the fan is on high (in override mode), the fan doesn't work. However, if it is 60 degrees F or so, the fan works great. I am in Alabama, so we have had plenty of warm days this winter, and some days I run the A/C. The fan has never failed to operate when the interior is 65 F or above. Also, even on cold days, when the sun has heated up the interior, the fan and the heat works fine. The fan failure seems to be directly related to a cold interior temperature. I would suspect the inside temperature sensor is somehow cancelling the signal to the fan altogether when it is cold inside so that it doesn't even work on high. Has anyone ever had this problem? Where is the inside temp sensor located and is it easy to get to? Or am I off track with my attempt to diagnose? Thanks in advance. Link to comment Share on other sites More sharing options...
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