Newby here. I just bought a 92 250 diesel. Love the truck, but have 2 problems. First the ac blows cold but with the fan speed selector on high, it is blowing like it is on low. Could this be the switch or is it a bigger problem. Next is there an easy fix for cruise control? Any help is appreciated.

 

Sounds like you need to clean out the blower box. there is a write up in the sticky. It wants you to cut the blower box. I removed the dash to clean mine. And about your cc, a shot in the dark would be the clock spring?
Good luck
Justin