when i turn my ac on i just hear a knocking noise repeatively. And my heat blows lower than room temperature. how do i ifx it?
Oct 4, 2010 at 5:36 AM
WRENCHTECH
✓Experienced Mechanic
20,760 POSTS
The heat in that vehicle is controlled by a blend door that regulates heated air flow. it is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged.