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