In the back/middle
How do i replace blend door motor
You don't!
How do I locate the heater blend door actuator in a Ford f150 pickup
how to replace a blend door actuator on a 1999 ford ranger
Assuming you are looking for the temp blend door actuator, remove the center console and you will see the actuator under the dash. It should be white in color.
In the trunk, I think
I believe it is located behind the glove compartment. Drop out the glove compartment box and you will see the blend door actuator.
rear a/c blend door actuator bad [broken plastic gear]
Generally the problem is with a broken blend door, not a bad actuator motor. A solution is available at www.heatertreater.net and additional information can be found by checking my other posts on this forum. cgallen
The Blend Door actuator on the Ford Windstar can be found by removing the glovebox. A broken blend door actuator is almost as common as a broken blend door itself. Typically, the fix requires disassembling the entire dash and replacing the whole plenum box, which can be a costly repair. Linked here is a video from www.heatertreater.net demonstrating how to access components of the plenum box for repair without disassembling the entire dash. heatertreater.net/Windstar%20Video.html This details the best DIY option on how to replace a broken blend door or actuator.
I believe it is a blend door actuator. The blend door actuator "blends" hot and cold air enabling you to control the climate control temperature.
The temperature blend door actuator is almost straight behind the radio.See "Related Questions" below for detailed instructions on replacing the actuator.