Have the above truck which is basically a 1996 Ford Ranger 3.0L v6 (all the parts are either stamped Ford or Motorcraft) which is blowing out only cold air when I'm trying to get heat. I just replaced the temperature selection switch (middle dial on the control panel), but to no avail. I checked the fuses in the fuse panel and they are all good. The A/C works just fine and the blower will put out air appropriately for the fan speed selected. The engine warms up normally, but I still receive cold or cool air.
Any suggestions on what I can try or what the problem may be. Any help is appreciated.