How does a Ford F150 blower motor work?
This is why at the bottom of the article we include a 2008 F150 blower motor wire diagram. The interior fan is powered through two separate fuses and a blower motor relay. They control the HVAC circuit with a switch. On the automatic temperature control system they further complicate the system by using a module.
What happens when a Ford blower motor resistor overheats?
In fact, overheating of the resistor becomes more likely to damage the electrical connector that plugs into the assembly. For this reason they now sell replacement parts that include the replacement connector referred to as a pigtail. As you can see from the image, they also include heat shrink connectors.
How much does it cost to replace a blower on a Ford F-150?
The average cost for a Ford F-150 Blower Motor Resistor Replacement is between $78 -$87. Learn More Recently the blower speed in ATC has started to go nuts. It revs up and slows down erratically, and even when I take manual control of the fan speed… it doesn’t seem to achieve the max speed that it used to.
What can I do about intermittent blower motor?
Try cleaning it by cycling the control from minimum to maximum rapidly a dozen times or so with the truck off. If that does not work you could take the HVAC controller out and try to get some spray electrical contact cleaner inside the rheostat and again swiping it a number of times.
Is there an intermittent blower motor in a Ford F150?
This vehicle the blower motor would turn on and off intermittently in various conditions, but if the wire harness for the blower controller was wiggled it would come back to life. Wire Harness: https://www.amazon.com/gp/product/B00… Wire Strippers/Crimpers: https://www.amazon.com/Power-Strippin… Loading…
What happens when a blower motor relay wears out?
Without it, the AC system will not be able to circulate any heated or cooled air. The blower motor relay controls the current used to power the blower motor, and is subject to the constant on and off switching. Over time, it can eventually wear out.
When does my AC blower motor come on?
When it does come on, usually after about 20 minutes of drive time, it blows great. At times it will come on as soon as I crank engine, at times it will not come on at all.