Hey guys, new to the f150 forum crew. I have an 04 fx4 with the manual ac controls. When I originally purchase it used about 3 months ago, the #1 setting for the blower didn't work, and it wasn't an issue for me. But about a week ago, the #2 setting quit working. What is the problem? Am I burning resistors? or is the selector switch bad? Please help!!!

 

If its anything like my old 02 explorer, there is a resistor / relay mounted near the blower that is common problem and will cause that issue. It cost $20 or less at local parts store. It was mounted to the firewall behind the glovebox with 2 small hex screws and had a flat 4 pin conector.

 

its a common problem, check the resistor, it should be mounted to the actual blower motor casing, they go out all the time at work

 

Thanks for the replies, I'll check back if that is the problem

 

That was the problem... thanks!