What should I do if my AC heater is not working?
What should I do if my AC heater is not working?
One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code (s) should be stored in the HVAC control module which should assist in diagnoses.
How do you replace the mode door actuator?
Before you replace the mode door actuator. Replacing the mode door actuator is easy. Just remove the screws and actuator and line up the splines on the new actuator with the splines on the mode door. Then reconnect the connectors.
Can a heater be removed from a blend door?
If the door is stuck the heater plenum with need to be removed and the problem resolved before installing the new unit. To test the blend door operation and too double check that you are changing the correct actuator motor turn the blower motor on and work the door in each way. You will be able to feel the air change temperature or vent level.
What does the mode door actuator do on a Dodge Ram?
The mode door is what changes the direction of the air coming out of the vents. Moving the door to different locations changes whether the air comes out of the defrost, floor, dash vents or a combination of both. The vehicles listed below use an electric motor mode door actuator.
If the door is stuck the heater plenum with need to be removed and the problem resolved before installing the new unit. To test the blend door operation and too double check that you are changing the correct actuator motor turn the blower motor on and work the door in each way. You will be able to feel the air change temperature or vent level.
What to do about a stuck HVAC mode door?
After watching some YouTube videos about dash disassembly for heater core replacement (since the heater core is inside the distribution box that needs replacing), I think I’m going to save up and have this done professionally.
How is the a / C heater control module calibrated?
The A/C-heater control module must be recalibrated each time an actuator motor or the A/C-heater control is replaced. If the vehicle is so equipped, the calibration procedure also includes rear HVAC positions for each actuator motor. Turn the ignition switch to the On position.
Where is the mode door actuator on a car?
You need to see if the mode door actuator is working. This actuator is on the evaporator case on the driver’s side above the gas pedal. You have to remove the knee bolster for access.
