Question about 2005 Ford Crown Victoria
Temperture doesn't change hot or cold. removed actuator motor and motor does not turn. Replaced with a new actuator from Ford, still doesn't work, changed control head in dash still doesn't work. This car is an old police cruiser it has manual temperature control not EATC
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Posted on Jan 02, 2017
Tips for a great answer:
Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
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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Suspect it is the blend door actuator, but please see my tip at http://www.fixya.com/cars/r6235876-no_heat_fan_blowing_cold_air . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info. Below are instructions for replacing the blend door actuator, but don't replace it unless you're sure it's bad. Autozone has it for $36. First, take it out, plug the connector back in and see if it turns when you change the temperature control. If not, the problem can be in the controller or the actuator. If it is clicking, the problem is stripped gears. If it isn't doing anything, you can check for voltage at the connector with a voltmeter. Connect the black meter lead to a good ground point and probe the connector terminals with the red lead while changing the temperature setting.
Blend door actuator removal and installation: Fig. Air temperature actuator removal
Fig. Air temperature actuator removal
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