blower fan blows even when off

[Jonboy]

I have a 92 ranger and I can turn my fan off and it still blows warm air through the vents whats going on? It sucks in the summer because I turn it off and it still blows warm air slightly. Any suggestions?

 

[RobbieD]

Sounds like your blend door ain't blending. Should be able to drop the glovebox, work the Cold / Hot slide control and see if the cable is sliding and moving the blend door arm.

 

[MAKG]

Is the fan TURNING? Sometimes high speed air can force itself through the vents just because the vehicle is moving.

If the fan is definitely on, you simply must have a short across the switch somewhere. No, it doesn't have to be the switch itself.