I have a problem that I think is the dreaded blend door, but it acts a little different than what I have searched for here on the forum.

I have heat with no problem, the only problem is that it will work on defrost or through the vents only. It just will not switch to the bottom(feet).

Is this the dreaded blend door?

Thanks in advance.

btw. the rear works fine.

 

You need to go here Free Ford Blend Door Fix

 

Can the actuator be reached this way in a 02 explorer? Every else that I read tells me that I have to remove the dash.

Thanks in advance.

 

The BLEND DOOR, does just that, it blends the air to get the right temp-- so thats NOT your problem. The blend door is electric adn variable position.--- The second part of the system is the DIRECTION DOORS. There are 3-4 other doors inside the duct that are controlled by vacuum pistons to direct the air to the defrost, vents, floor, or combination of the above. YOu probably have one of the cylinders or doors broke. IF you have no vacuum, the system will blow only out the defrost. If you can select "panel" and get air out the center vents, then i would say you have vacuum available. If you select "floor" or a combination of the floor and get NOTHING, then that door is not working. I assume you are saying you get NO air to the floor, not that you get no HOT AIR to the floor. Another possibility is that the vacuum hose for the floor vent has fallen off the selector swtich on the dash, or the selector switch is bad. I will post a description of how things work, and you can test. I cant tell you exactly where this vacuum cylinder is, except "behind the dash".

 

This is a 2002 F150-- but you will get the idea. Try each positon on the switch and see if it agrees with below---------

Heater/ AC vacuum door air routing thru the duct

OFF
When OFF is selected:

--The A/C inlet duct door is at full vacuum, closing off outside air and admitting only recirculated air.
--The panel/defrost door is in the no vacuum position, closing the passage to the instrument panel A/C registers.
--The floor/panel door is at full vacuum, closing the passages to the panel/defrost outlets.
--The blower motor and the A/C compressor are off.

PANEL/FLOOR
When PANEL/FLOOR is selected:

-The air inlet duct door is at no vacuum, blocking the recirculated air passage and admitting outside air.
--The panel/defrost door is at full vacuum, closing off airflow to the windshield defroster hose nozzle.
--The floor/panel door is in the partial vacuum position, allowing airflow to both the heater outlet floor duct and the instrument panel A/C registers. There is also some airflow to the A/C side window demisters.
--The A/C compressor will be enabled when PANEL/FLOOR is selected.
--The blower motor is on.

FLOOR
When FLOOR is selected:

--The air inlet duct door is in the no vacuum position, blocking recirculated air and admitting outside air.
--The floor/panel door is in the full vacuum position, directing all airflow to the heater outlet floor duct.
--The temperature can be adjusted to mix airflowing through and around the heater core to achieve the desired temperature level.
--The panel/defrost door is in the no vacuum position, blocking air circulation to the instrument panel A/C registers.
--The A/C compressor will be disabled when FLOOR is selected.
--The blower motor is on.

FLOOR/DEFROST
When FLOOR/DEFROST is selected:

--The air inlet duct door is in the no vacuum position blocking recirculated air and admitting outside air.
--The panel/defrost door is in the no vacuum position directing airflow to the windshield defroster hose nozzle.

 

very much appreciated. Yes I can select from defrost(top) to vent and it switches fine. I have tested the heat and ac and both change fine I'm just not getting any air blowing down at my feet. I will follow your guide and see what I find.

Thaks a million.