Perhaps a bad fan motor?
Perhaps a bad fan resistor?
Perhaps a plugged evaporator coil?
There is an electrical short to ground in the fan switch or in the blower motor itself.
Dodges are good for blowing fuses. If that is not it, the fan switch might need replaced.
There might be a bad fuse causing the heater to not work. Check the fuses if they are all ok you may have a bad blower motor. when you turn the heater on and no air is blowing then it is your blower motor.
The problem exists somewhere in the circuit for the HVAC blower. Check fuses and relays. If they check out, check for power and ground at the weatherpack terminal which connects to the HVAC blower. If that checks out, then your blower motor is probably bad.
Beause there is probably a short/bad connection in the switch, or the blower motor itself
checkALL of your fuses short could be a problem. i have a 95 blazer, bumps may of screwed up wiring like in mine
If the heater is blowing the fuse when the blower is turned on, I would suspect the blower motor is defective or locked up. If the A/C is blowing a fuse, suspect a bad clutch, or locked up compressor.
Fuses and relays are not your problem. The Blower Motor Resistor Pack is defective and needs replacing.Fuses and relays are not your problem. The Blower Motor Resistor Pack is defective and needs replacing.
Check switch
there is a short somewhere in dash or heater, you need to fix that to stop fuses blowing
Ok..I figured it out. Turns out the rear defroster is the problem. When I unplugged it from the back windshield, blower/heater works great!! So...to all those out there..if your blower motor blows fuses...check the blower motor first...then the HVAC and heater fuses, then rear defroster if you have a cavalier!
The blower motor fuse has blown or the blower motor itself has blown. Change the fuse or replace the blower motor itself and you should be good.