Can a blower motor resistor work intermittently?
When the resister of the blower motor starts to fail, the motor operates only intermittently. The higher current can make the jump across the resistor contacts that are going bad and get the blower motor to engage.
How do I know if my blower motor switch is bad?
Another symptom of a bad or failing blower motor switch is a switch that is stuck, or frequently gets stuck. If the switch or any of its contacts becomes damaged, this may cause the switch to jam, or get stuck when you trying to change the setting.
How do I know if my heater fuse is blown?
Some plastic fuses will have the same wire, but it is only visible when viewed from the side. On either type of fuse, you can tell that it is blown when the wire is broken. You may also need to use your multimeter to check if your fuses are blown. You can quickly determine by checking resistance with a multimeter.
Where is the thermostat fuse located?
Simply locate your breaker panel or fuse box (usually either outside your home or located in a closet somewhere inside) and look for the fuse or circuit that your furnace is on. If the fuse is blown, replace it.
Where is the fuse for the heater?
Fuses. If your furnace has a fuse, it will probably be located in the control box with the blower. BIf you can’t locate it, the transformer may have burned up and will need to be replaced. Once you’ve located the fuse, check its wires to see if they’re broken or look for signs of discoloration or cloudiness.
How much does it cost to fix a car heater blower?
Know what price you should pay to get your vehicle fixed. The average cost for a blower motor replacement is between $363 and $394. Labor costs are estimated between $87 and $111 while parts are priced between $276 and $283.
What happens when blower motor goes bad?
Little or no airflow through the vents, defroster does not clear glass well: This is a key symptom of a bad heater blower motor. If the motor is worn out or damaged, it will be unable to generate the airflow necessary for the heating and air conditioning to work properly.