I dont do social media. Cant we just use plain old email?
What year E150 ? Manual or automatic HVAC ? What door isn't switching ? Mode door , temp. door ? Some ford's have a valve under the hood hooked to heater hoses called hot water valve , allow hot coolant to go through the heater core . Ford Explorer 1992 heater control valve install Explorer E150 doesn't matter ford used on all there vehicles ! Some are vacuum controlled others are controlled by a cable !
Testimonial: "2003 Ford E150 door is not switching between air and heat. Cannot find the actuator plug."
Air
Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
In
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car. Always have this problem confirmed by a dealer or
qualified repair shop as it is a very expensive repair.
Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.
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