Sounds like the motor has gone bad. However, these aren't hard to change. It's located under the passanger side dashboard. Just unscrew the screws, pull it out and rewire a new one. they cost about $40.
probably the heater core is plugged
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!
Heater core changed three years ago,I changed Thermostat Heater still blows cool air.
Your heater coil is bad.
AnswerDepends whats broken ie. blows cold, no blower at all ???????no blower at all
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.
we changed radaitor & thermastate , now heater blows cold air
If there is an issue with your Ford Focus heater that blows intermittently it is a sign that the blower needs to be replaced or cleaned. A certified mechanic can do a diagnostic check to verify and make the necessary repairs.
Turn the key off and remove it. Unplug the electrical connector at the heater blower, then unbolt the blower and pull it out. Place the new blower in position and bolt it into place. Connect the electrical connector, then start the car and verify that it blows.
Yes, if the blower isn't working. If it turns out to be the fuse, and it blows again, you probably have a bad blower motor.
The heater contains a resistor. When high voltage is passed it produce a large amount of heat the blower situated in the heater blows this heat which diffuses in the room to make the room hot.
It has a bad "Blower Motor Resistor" The fan switch itself is fine.