I have a 2000 mercury mystique with no heat. The heater core get hot but the fan only blows cold air.
Thursday, May 12th, 2011 AT 7:33 PM
1 Reply
WRENCHTECH
MECHANIC
20,761 POSTS
The temperature is controlled by the use of an air mix door that is operated by an electric motor/actuator. This door can be jammed or the actuator can be inoperative or have stripped plastic gears internally.