what causes the Ford Mustang S650 (2024-Present) fuel gauge to malfunction

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle’s battery to prevent electrical shorts.
• Allow the vehicle to cool down if it has been running.

2. Accessing the Fuel Gauge Sender

• Remove the rear seat or access panel to reach the fuel tank.
• Detach the fuel pump module from the tank, carefully observing all connections.

3. Inspect the Fuel Sender Unit

• Use a multimeter to check the resistance of the fuel sender unit. It should vary with the position of the float.
• If resistance is outside the manufacturer’s specifications, replace the fuel sender unit.

4. Reassemble Components

• Reinstall the fuel pump module into the tank, ensuring all seals are intact.
• Reconnect any wiring harnesses, ensuring they are secure and free of corrosion.

5. Final Checks

• Reconnect the battery.
• Perform a visual inspection of the instrument cluster for any loose connections or visible damage.