Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
The flappers are controlled by an electronic motor. They are a small box with a motor and gears. One of mine use to flap. I went to the wrecking yard and got a replacement. It stopped the flapping when I replaced it. I took the one that was flapping apart and one of the gears was broke. I have a write up somewhere on here.
I found it
http://www.thetruckstop.us/forum/showthread.php?33272-Recirculation-Actuator
There is more than one of these.
That one was located on the passenger side of the truck. Between and up near the inside of the fire wall. In a small crevice barely large enough for human hands to reach. I will see if I can try to get a picture and add it to the post. I found mine by following the clicking with my ears and hand reaching around. It was far from easy to replace. But very doable.
I did some quick online looking, seems as if there is 1 for the A/C, and one for the fresh air/re circ. I have to find out where the two are located to find out which one it is. All my A/C stuff is pulled.
Mine was the fresh air recirculation control box. I added pictures of its location.
These are different from the doors that direct flow, right? Are they all controlled by motors?