why does my Ford F-150 AC blow hot air on one side

Solution

1. Preparation

• Gather necessary tools and parts before starting.
• Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Check Refrigerant Levels

• Tools Required: Manifold gauge set
• Connect the manifold gauges to the AC service ports.
• Check the low and high-pressure readings against manufacturer specifications.
• If low, add refrigerant according to the vehicle specifications.

3. Inspect and Test Blend Door Actuators

• Tools Required: Screwdriver set, multimeter
• Remove the dashboard panel to access the blend door actuators.
• Disconnect the electrical connectors from the actuators.
• Use a multimeter to test for power and ground at the actuator connectors.
• Manually move the blend doors to ensure they are not stuck and can operate freely.

4. Replace Faulty Components

• If an actuator is found to be faulty, follow these steps:
  • Remove any necessary panels to access the actuator.
  • Unscrew and remove the faulty actuator.
  • Install the new actuator, ensuring it is aligned properly.
  • Reconnect the electrical connectors and replace the dashboard panel.

5. Reconnect Battery and Test System

• Reconnect the vehicle battery.
• Start the engine and test the AC system by adjusting the temperature settings.
• Verify that both sides of the vehicle are blowing the correct temperatures.