2004 Ford Expedition XLT, front blend door actuator
I am having a problem with my Expedition, when I press the button for the heat to blow through the back floor it doesn't work. The heat will only blow from the roof. I turned the knob for rear control and pressed the button from the back, it still doesn't work. So, the floor vents are not working, just only the roof air vents. I have the same problem on my 04 Expedition XLT, but with my front vents. Fan and temp controls work fine, but the vent doors have stopped working. I only get air through the defrost vents. Is this my front blend door actuator?
Re: 2004 Ford Expedition XLT, front blend door actuator
No airflow (cold or hot) through main vent ducts. Can hear the blower working, can feel air coming from in and around the dash area. Seems lik something is blocking the majority of air from coming through the vent openings. They(vents) are open but no air.
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The rear heater will use vacuum or an electric motor to control a blend door to direct the airflow. This may be a big job to access this blend door actuator for testing as the interior paneling will have to be removed. If there is no heat available to the rear, check the coolant level to make sure it is full.
You need to google 2001 f150 blend door actuator replacement. It is slightly right of center above the plastic duct work for the floor area. All lower dashboard plastic is removed to get at it.
Then the ducting is removed.
The blend door actuator is located in the left rear quater panel. It's right there when you remove the trim panel (left side rear) Below is a picture of it when panel is removed along with another picture of the air duct system. I also gave you a picture of the connector at the actuator. Make sure you are geting power and test opening and closing. Worst case you could make the blend door stay to where you are geting heat until you can repair the problem...
you need to have automatic ac and heater control checked out at a garage problem could be in the mode switch or electrical problem causing front blend door actuator not working properly.your vechicle has the EATC SYSTEM which is computer control need diagnostie equipment to fix.
Expedition uses the same HVAC system as the Ford F150 pickup truck. The
Expedition is a little tricky though because you have to remove the center
console and floor heat distribution vent to access the actuator motor.
Once you remove the motor, you can examine the blend door axle for
cracks or breakage. This is a common fail mode on the Expedition.
HeaterTreater is the world's leading company for aftermarket blend door
fixes and has a product for the Expedition. Additional diagnostic
information and pictures are available on the Ford Expedition
HeaterTreater Ebay listing or the web site at www.heatertreater.net.
There is an inexpensive effective fix available that replaces the cheap
plastic door with steel that will outlast the vehicle.
I ASSUME THIS IS A 98, THIS PROBLEM IS CAUSED BY A PART CALLED AN "AIR TEMPERATURE CONTROL BLEND DOOR ACTUATOR MOTOR" THIS MOVES A DOOR BETWEEN THE COLD AIR FROM THE AC AND THE HOT AIR FROM THE HEATER CORE, YOU WILL NEED TO REPLACE THAT ACTUATOR. .
Air inlet door
Temperature blend door
Auxiliary mode door
The auxiliary A/C and heating system has the following features:
The auxiliary A/C and heating system is functional whenever the instrument panel mounted A/C control is in any position except OFF.
The auxiliary blower motor recirculates the air inside the vehicle. Outside air is not available to the auxiliary system.
Air is cooled and dehumidified by the auxiliary A/C evaporator core only if the instrument panel mounted A/C control is adjusted to a position that requires A/C compressor operation.
The temperature blend door and the auxiliary mode door are controlled by electric actuator motors.
Movement of the auxiliary temperature control between COOL and WARM causes a corresponding movement of the temperature blend door to mix air flowing through and around the auxiliary heater core.
Movement of the auxiliary mode control between PANEL and FLOOR causes a corresponding movement of the auxiliary mode door to direct air flow between the panel (headliner) registers and the floor duct.
I would say the auxiliary mode door (#4) electric motor is not wokring.
Auxiliary Blend Door Actuator —Air Distribution
Removal and Installation
Remove the RH quarter trim panel cup holder and access panel.
Remove the screws.
Disconnect the blend door actuator electrical connector.