Posts Tagged: blower motor controller
Ford Blower motor controller replacement in F-Series Trucks
How to replace the Ford blower motor controller in an F-Series truck On late-model Ford F-series trucks equipped with variable-speed HVAC systems, Ford mounted the blower motor controller behind the heater box—an inconvenient and time-consuming location. This component acts like a modern, computer-controlled version of the old blower motor resistor. It adjusts the fan speed by pulsing voltage to the blower motor based on your settings. According to the factory service manual, replacing this part requires full removal of the heater box—meaning you have to evacuate the A/C system first. … Read More
Blower motor keeps running: Common cause
Why the blower motor keeps running after you turn off the car If your car uses a blower motor controller, it can keep running the blower motor after you shut down the engine. Those used to be installed only on vehicles with automatic climate control with variable speed fans, but now they’re installed on many late model vehicles. How a blower motor controller differs from a blower motor resistor? In a vehicle equipped with a blower motor resistor, voltage is reduced by the value of each resistor based on the … Read More