1997 Merc Mystique heater fan only works on low

SOURCE: Blower motor is not working

The blower motor seems difficult, but actually it was easier than I thought. I broke some of the plastic surroundings when trying to remove the motor. But, the motor actually just pulls right out, but there is a clip, screw(s), or something in that area that holds it in place. But once you see what is holding it up there, remove it and the motor will pull right out.

SOURCE: A/C fan speed not working

There are a total of 5 fuses which affect blower fan (correct terminology) speed. One is a 40 amp unit in the fuse block under the hood. (Passenger side) The other 4 are in the fuse block under the passenger side of the dash board. Check them all.
Charlie

SOURCE: why wont my heater or ac fan not blow in my car?

I'm having the same problem,and I've already checked the fuses. Is there some other possibility?

SOURCE: 1995 mercury mystique heater died today. I smelt

YOU'LL FIND A MELTED 40 AMP FUSE IN THE FUSE BOX UNDER THE DASH ABOVE AND LEFT OF THE BRAKE PETAL. GOOD LUCK!

SOURCE: 1997 Mercury mystique the engine cooling fan will not operate

it could be the engine coolant sensors on the thermostat housing it controls the fans when they work if your sensor is out you can unplug the sensor while running the motor and if they turn on after a moment(the fans)then the sensor is bad if not make sure your fans work by jumping power to them 12volt