Looking for suggestions. A few weeks back my car over heated and steamed over. I went and checked the fuses and the 50amp under the hood was blown. Replaced the fuse and went to top off the coolant and noticed the fan was still not kicking on. Tried both heat all the way on and getting the car to operating temp and also tried turning the AC on and still no fan. Are these fans prone to fail? is there a relay or something I don't know about? Any suggestions what to double check.