Why does my blower fan keep changing speed?
When the engine is cold and you ask for heat the fan should fluctuate as the engine warms, then as the temperature in the cabin is met. If you adjust the temperature and vent selection but not the fan speed, the fan will continue to change speeds to regulate temperature.
Why does the fan fluctuate when the temperature is set?
If you have dual climate control, when you set a temperature the fan motor should be fluctuating to reach this temperature. When the engine is cold and you ask for heat the fan should fluctuate as the engine warms, then as the temperature in the cabin is met.
How does a Ford Edge blower fan work?
Blower fan intermittent, changes fan speed on its own. All fuses are good. – 2012 Ford Edge Blower fan intermittent,… Blower fan intermittent, changes fan speed on its own. All fuses are good. Hello, this has become a common problem over the past several years. The first thing to note is proper understanding of the system controls.
Do you need to test the fan speed?
If you put the fan on the highest setting, it should blow on high no matter what. If it doesn’t blow full blast with the fan speed set to high, the chances are the fan speed controller/fan resistor needs to be tested. Models with dual climate control use the fan speed controller, and others use the resistor.
When the engine is cold and you ask for heat the fan should fluctuate as the engine warms, then as the temperature in the cabin is met. If you adjust the temperature and vent selection but not the fan speed, the fan will continue to change speeds to regulate temperature.
What does it mean if your blower motor is not working?
Average rating from 849 customers who received a AC is not working Inspection. The blower motor resistor is an electrical component that is a part of the vehicle’s heating and air conditioning system. It is responsible for controlling the blower motor’s fan speed.
How is the speed of the blower motor controlled?
The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.
What are the symptoms of a failed blower motor resistor?
Blower motor resistor problems. Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at high speed and doesn’t work at low speeds.