How do you know if your heater resistor is bad?
How do you know if your heater resistor is bad?
If the airflow from the vents is weak… If you try to increase the air pressure and you feel no difference in the pressure blowing, then your blower motor resistor may be failing. A damaged blower motor resistor will work on one fan speed which may not be enough to keep the inside of your car cool or warm enough.
What does a heater fan resistor do?
“Blower motor” refers to an electrically operated fan in a vehicle that supplies air to the passenger compartment. The heater blower resistor helps control the rate at which the blower motor supplies this air.
What causes a blower motor resistor to burn out?
Trent, one of the biggest reasons for blower motor resistors to have shorten life is actually because of faulty blower motor drawing too many amps, some times melting wires/plugs, heating up resistors shortening their life.
How much does it cost to replace a blower motor resistor?
The average cost to replace the blower motor resistor at a repair shop is between $44 and $55 in parts and $70 in labor costs, for a total cost of around $114 to $125.
What happens when a resistor fails?
When a resistor breaks down, current typically flows through the burnt resistor without any resistance and thereby passes unchecked. Other components in the circuit may become damaged from the excess current flowing through.
Where is the heater resistor?
The heater blower motor resistor is often found beneath the dashboard. It is located in the heater and air conditioning compartment. It’s connected to the air conditioning system, where it can adjust the speed of the blower motor fan. It can also be found behind the glove box of some vehicles.
How much does it cost to fix a blower motor resistor?
What causes a resistor to go bad?
Resistors rarely fail when the circuit is designed properly, but under overload conditions (such as the failure of a component elsewhere in the circuit that puts a high voltage across the resistor) resistors typically fail by becoming an open circuit (after becoming very, very hot to the point of incandescence).
Is there a fuse for blower resistor?
A fuse is often located on the resistor board. The fuse only protects the low and medium blower speeds.
