Blower Speeds at 1, 2, 3, not working. I read on this forum of others who replaced their blower speed resistor to fix the problem. So I get a new resistor and replace. I works for less than a day and now I have the same problem. I guess the resistor failed again. What would cause that resistor to fail? Is it upstream electrically from the resistor? Starting to get warm in Kansas and could really use some AC. Hope someone can point me in right direction.