I checked the fuses, and the 15 was burned out. I replaced it and the aux. fan came on when it was supposed to. The car was running 90 and below now. It didn't hit 100 at all, and I was driving stop and go. I'll test it out tomorrow to see if it can handle the mid-day heat, but I don't think I'll have any problems. My last question is why this fuse would have blown?? I just had the wiring harness, a coolant hose, and the thermostat replaced last week...could that be related?
94 E320 138k