1. Wiring:
- Check the wiring between the fuel sending unit and the fuel gauge. Ensure proper connections and correct wiring. Test for continuity or any short circuits. Faulty connections or shorts can interfere with proper gauge readings.
2. Fuel Level Sensor Float Assembly:
- Confirm that the sensor float arm moves fluidly throughout its vertical range, from "empty" to "full." Ensure it isn't stuck or kinked, hindering its movements.
3. Gauge Cluster or Fuel Gauge:
- The fuel gauge itself or the instrument cluster (which the gauge is integrated into) may have internal issues like faulty contacts, short circuits, or electronic failures.
4. Fuel Sending Unit Connection to Tank:
- Verify that the sending unit is securely tightened against the fuel tank opening, allowing proper positioning of the float assembly. Check if there are any leaks around the seal as well.
