Seems to me you may have two separate issues, but maybe not. Could it be that leaves, a mouse, or other debris has gotten into the fan box blocking the air flow and finally jamming the fan? It maybe possible to remove some parts under the hood to gain access to the air intake and use a shop vac to get the debris out. You may still have to replace the fan fuse, motor, or resistor as well. Also check that the radiator is properly filled, as low coolant can cause the heater to work poorly.
SOURCE: 1995 ford escort lx fan relay locations
right hand side under bonnet on the wing or at the back by the battery depending on model build
SOURCE: defrost blows cold air
Sounds like you have a plenum door that is not opening when you go into defrost mode. You will have to check all your vacuum hoses and switching valves under the dash to see which one is not working. Hope this helps.
SOURCE: Ford Windstar SE, 3.8L V6, 1999, front seat heat/defrost is cold
the blendor actuators strip out the gear inside the actuator cases on these all the time. replace the actuator.
SOURCE: 1991 Ford Escort fan will not turn on and motor overheats.
some water from the tail pipe is normal but if the car is running bad then it is possible the head gasket is blown. on the escorts that i have owned i have found that the main relay is usually burned and needs to be replaced. it is possible that the fan is dragging and burning this relay up if this relay is good then you may be better off taking it to the electrical shop.
SOURCE: 97 Ford Escort- no heat/ac/defrost or vent fan.
OK the HVAC system has several components that make it work.
The actual heat is the hot coolany from your engine that flows though a heater core.
The blower fan operates on 12 volts, and runs through a resistor to apply your fan speeds.
The selector to run heat, defrost, ect. runs off of the vehicles engine vacuum, and opens and closes diverter doors.
The A/C uses a pump at the engine, a condersor coil and several switches.
I would look to the HVAC switch controler. Check for voltage there.
Please let me know.
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