Here's the long story: The other day, I was on my way to work, and I accidentally closed all of the vents while I had the heater fan cranked to high with full heat. Once I realized what I had done, I opened the vents, only to find that the heater fan did not work. I checked the fuse (blue), and it had not blown. I messed with the climate controls, clicked the A/C compressor on and off a few times, and suddenly, the heater fan began working again.

This morning, I was thawing out my car, with the heater fan on high with full heat, when after about 4 minutes, I noticed a strong burning smell coming from the vents (not from under the dash from what I could tell). I immediately turned the fan off and investigated the source of the smell. When I couldn't find anything, I tried the heater fan again, and it would not turn on. The fuse still had not blown. I then put a fire extinguisher on the passener floorboard and drove to work.

Did I burn out my fan motor? How hard is this to replace? Why didn't the fuse blow? I'm confused. . .and cold. . .and tomorrow my poor car will be covered in a sheet of ice that it won't be able to thaw. . .

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1982 240D - 292,000 miles and counting
Same family for 33 years
Newly rebuilt Monark injectors
Newly replaced clutch
New Bilstein shocks