01 F150 Erractic Blend Door Actuator

[Reynolds]

Hello Fellas,

I have been having some issues with my A/C for the last couple of months and have finally decided to look into what the problem was. First of all, my truck is an '01 F150 with a 5.4L. The problem I have been having is that while on A/C the temperature keeps fluctuating between hot and cold. I read on the internet that the most likely cause was a broken blend door. I wasn't real excited to hear that due to the repair cost ($800) or the time, 8-10 hours if I would do it myself. I now don't believe that I have a broken blend door. I can see the blend door actuator turning the blend door as I rotate the temperature control. After a couple of seconds of rotating one way, without provocation the blend door actuator turns the other way, and so on so forth. I am not sure if the problem is the blend door actuator, or the temperature control knob??? Any ideas? Thanks

[fishing tech]

The blend door breaks where actuator goes into it. Another problem could be that the foam that is on the door has come off and won't allow the door to move properly.

[98prosport]

replace the door motor, your local parts store will have them in stock. not too difficult. follow a manual.

[x1957x]

Yeah, it sounds like the blend door. I have a 00 ford f-150 and similar problems. Does it make some noise when it opens and closes? It is about 6 to 8 hundred to fix. Are you mechanicaly inclined or at least a little bit. If so, what I did is went on You Tube and went into 00 ford F-150 blend door repair and there is a video that shows how to repair it without tearing out the whole dash assembly. I did it and it took me about 2 hours and was done. Works great now and yes the fords are really knowen for blend door problems. Let me know if you need anything else.

[Reynolds]

I ended up pulling the cowling off that covers up the blend door motor. I waited until the air was very cold (door fully open), then unplugged the wire harness. I am sure if I would have brought it in they would have told me the blend door was broken, as that is quite common. I can't control how cold the A/C temp is now, but that is not much of a concern seeing as I live in Florida where the temps are 90-98F everyday.