2005 Mazda 3 4 cyl Front Wheel Drive Automatic 50000 miles
My mazda heater blower, and ac blower for that matter, only work intermitently. I turn on the fan, then 20 minutes later it will suddenly start working. Hot air comes out of the vent when the recirc/fresh air selector is on fresh, but it only comes out due to the movement of the car. Blower doesn't actually push it. Is it a switch, relay, possible blowre problem?