how to fix the fuel gauge not working on Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a level surface.

2. Access the Fuel Sender Unit

• Sub-steps:
  1. Remove the rear seat or access panel to reach the fuel tank area.
  2. Disconnect the fuel pump electrical connector and any retaining clips.
  3. Carefully remove the fuel pump assembly from the tank, taking care to avoid damage to the fuel lines.

3. Inspect and Test the Fuel Sender Unit

• Sub-steps:
  1. Visually inspect the fuel sender for any signs of wear or damage.
  2. Use a multimeter to measure resistance across the sender terminals; refer to the service manual for correct resistance values (typically 0-90 ohms).
  3. If the resistance is outside the specified range, replace the fuel sender unit.

4. Repair or Replace Components

• Sub-steps:
  1. If the wiring or connectors are damaged, repair or replace them as necessary.
  2. If the gauge itself is faulty, replace the dashboard instrument cluster.
  3. Reinstall the fuel pump assembly into the tank, ensuring all seals are properly seated to prevent leaks.

5. Reassemble and Reconnect

• Sub-steps:
  1. Reconnect the fuel pump electrical connector and secure it with retaining clips.
  2. Reinstall the rear seat or access panel.
  3. Reconnect the negative battery terminal.