Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA2005CIVIC SI L4-2.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSFUEL LEVEL SENSORSERVICE AND REPAIR
2005 Honda Civic Si L4-2.0L
Fuel Level Sensor: Service and Repair
2005 Honda Civic Si L4-2.0LSECTION Service and Repair
Fuel Pump/Fuel Gauge Sending Unit Replacement
Special Tools Required
Fuel sender wrench 07AAA-S0XA100
1. Relieve the fuel pressure.
2. Remove the fuel fill cap.
3. Remove the seat cushion.
4. Remove the access panel (A) from the floor.
5. Disconnect the fuel pump 5P connector (B).
6. Disconnect the quick-connect fitting (C) from the fuel tank unit.
7. Using the special tool, loosen the fuel tank unit locknut (A).
8. Remove the locknut (A) and the fuel tank unit.
9. Remove the stopper (O). Release the hook (P) and remove the fuel filter (B), the fuel gauge sending unit (C), the case (D), the wire harness (E), and the fuel pressure regulator (F).
10. When connecting the fuel tank unit, make sure the connection is secure and the suction filter (G) is firmly connected to the fuel pump (H).
11. Install the fuel tank unit in the reverse order of removal with a new base gasket (I) and new O-rings (J), then check these items.
- When connecting the wire harness, make sure the connection is secure and the connector (K) is firmly locked into the place.
- When installing the fuel gauge sending unit, make sure the connection is secure and the connector is firmly locked into place. Be careful not to bend or twist the connector excessively.
- When installing the fuel tank unit, align the marks (L) on the fuel tank (M) and the fuel tank unit (N).
Special Tools Required
Fuel sender wrench 07AAA-S0XA100
1. Relieve the fuel pressure.
2. Remove the fuel fill cap.
3. Remove the seat cushion.
4. Remove the access panel (A) from the floor.
5. Disconnect the fuel pump 5P connector (B).
6. Disconnect the quick-connect fitting (C) from the fuel tank unit.
7. Using the special tool, loosen the fuel tank unit locknut (A).
8. Remove the locknut (A) and the fuel tank unit.
9. Remove the stopper (O). Release the hook (P) and remove the fuel filter (B), the fuel gauge sending unit (C), the case (D), the wire harness (E), and the fuel pressure regulator (F).
10. When connecting the fuel tank unit, make sure the connection is secure and the suction filter (G) is firmly connected to the fuel pump (H).
11. Install the fuel tank unit in the reverse order of removal with a new base gasket (I) and new O-rings (J), then check these items.
- When connecting the wire harness, make sure the connection is secure and the connector (K) is firmly locked into the place.
- When installing the fuel gauge sending unit, make sure the connection is secure and the connector is firmly locked into place. Be careful not to bend or twist the connector excessively.
- When installing the fuel tank unit, align the marks (L) on the fuel tank (M) and the fuel tank unit (N).
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.