I have a 92 YJ 4 Cyl. Recently the heat will not blow any air out on any speed. I can feel hot air coming through the vents once the car heats up, however again, I can not turn on the heat to blow the hot air into the car. What could be the problem?
the fan motor is cheap and easy to replace.
if your fuse is good .unplug the fan and run some wire from a 12volt post at the fuse box or from the battery and hook up the fan to see if it runs with direct voltage if it does check fan switch and or test for 12 volts with a multi meter .
if it does not start working with direct voltage to it the fan motor is bad and must me replaced or rebuilt .