No air coming out when I turn the heater on. Turn the fan switch on but no air coming out.
The basic parts of a blower system are the:
- blower motor
- blower motor resistor
Turning your fan switch all the way up should bypass the blower motor resistor, but as you have tried that and it still doesn't work it's unlikely to be the resistor, which leaves the other options. With the fuse, I'd replace it entirely and thoroughly clean the connectors in the fuse panel. Then I'd check the wiring going into the blower itself, disconnect the harness and check to make sure it's clean and reconnect it, seating it properly. Check that the blower is clear of debris and that it spins freely, if it doesn't spin it's seized or jammed. If it spins properly then you can test it by using jumper cables connected to the car battery on one side and probe wires on the other, touching them to the blower connections. If the blower spins then you have a wiring issue somewhere, if it doesn't then the blower itself has failed.