I have a 2006 Dodge Durango 5.7 and my blower motor has been acting up for a couple of years now and is getting worse and worse. It runs just fine when the weather is warm but when it's below 40 degrees out the blower motor won't blow any air at all, after the car runs for about 30 to 45 minutes it will randomly kick on and start blowing air again. I have replaced the blower motor, the relay, and the resistor and harness. I'm not sure why it only happens in cold weather and not sure why it randomly kicks on and starts blowing air again after the car has ran for a long time. Any help would be appreciated.