At the hump in the floor board, under the dash area, there is a piece of plastic covering the blend door area. Some will twll you that you have to remove the dash to replace this. I just popped off the cover and manged to get the motor out with a little finagling. Good Luck.
How do I locate the heater blend door actuator in a Ford f150 pickup
The most common cause of this failure is a broken blend door. Check heatertreater.net for diagnostic information and an inexpensive fix.
The heater flap, or blend door, is difficult to replace with OEM parts supplied from Ford. There is an aftermarket kit that makes the job and cost significantly easier at heatertreater.net or on the Ebay listing.
Burried behind the dash on the passenger side, good luck.
some possibilities are. low coolant level, open thermostat, pluged heater core,
Low on coolant. Thermostat stuck open. Heater core plugged up. Temp blend door malfunction.
You have done something to the mix door. It should shut off air to the heater core when the AC is on. It is located right near the core and you may have bent it or just disconnected it by mistake.
How do I replace the block heater in my 1998 F150 4.6L?
The blend door on a Ford F150 is on a verticle axis and the actuator motor can be seen from the Driver's side foot well, above the transmission tunnel. The motor is attached to the bottom of the heater box and is a little tricky to access. HeaterTreater is the world's leader in aftermarket blend door fixes and has a product to repair the F150. Check the Ebay listings or www.heatertreater.net for diagnostic information and pictures. cgallen
end of drivers door there is a sticker, and at the bottom of the windshield, on the dashboard, it is viewable from outside the vehicle.
how to fix a fuel door on a 2010 f150
Most likely a blend door issue. Check heatertreater.net for pictures and diagnostic information.