Here's a general overview. This is not a comprehensive guide, and you should consult a repair manual specific to your 1998 Lumina (including engine type) for detailed instructions and torque specifications. Repair manuals can be found online or at auto parts stores.
Safety First:
* Disconnect the negative battery terminal before starting any work. This prevents accidental sparks and electrical shorts.
* Work in a well-ventilated area. Fuel vapors are highly flammable.
* Wear safety glasses and gloves.
* Have a fire extinguisher readily available.
Steps (General Outline):
1. Preparation:
* Gather your tools: socket set (various sizes), wrenches, screwdrivers (Phillips and flathead), fuel pump pliers (highly recommended for fuel line disconnection), jack, jack stands, fuel line disconnect tools, new fuel pump, new fuel filter (recommended), rags, safety glasses, gloves, and a container to catch spilled fuel.
* Consult your repair manual for the specific location of the fuel pump access panel (usually under the rear seat or in the trunk).
* If necessary, lower the fuel tank (this may require removing the spare tire and other components). This is often the most challenging part. Some models may have access from the top of the tank.
* Carefully relieve fuel pressure in the fuel lines. This is crucial to prevent fuel spraying. Consult your repair manual for the specific procedure; it often involves turning the ignition key on and off repeatedly.
2. Access the Fuel Pump:
* Remove any necessary components to access the fuel pump (e.g., rear seat, interior panels, trunk liner). Your repair manual will provide precise instructions.
* Locate the fuel pump access cover. It may be a panel or require the removal of the fuel tank.
3. Remove the Old Fuel Pump:
* Disconnect the electrical connector to the fuel pump.
* Disconnect the fuel lines. Use fuel line disconnect tools to avoid damage to the lines. Be prepared for some fuel spillage, use rags to soak it up.
* Remove the retaining ring or bolts holding the fuel pump assembly in place.
* Carefully lift out the old fuel pump assembly.
4. Install the New Fuel Pump:
* Install the new fuel pump assembly, ensuring it's seated correctly.
* Reattach the retaining ring or bolts.
* Reconnect the fuel lines securely. Again, use fuel line disconnect tools.
* Reconnect the electrical connector to the fuel pump.
* If the fuel tank was lowered, carefully raise it back into place and secure it.
5. Reassembly and Testing:
* Reinstall any removed components.
* Reconnect the negative battery terminal.
* Carefully prime the fuel system. Consult your repair manual for the correct procedure. This is often done by turning the ignition key on and off several times (without starting the engine) to allow the pump to fill the lines.
* Start the engine and check for leaks.
* Check the fuel pressure (if you have a gauge) to ensure the new pump is functioning correctly.
Important Considerations:
* Fuel pump replacement often involves working with fuel, which is flammable and dangerous. Always take precautions.
* Incorrect installation can lead to fuel leaks, engine damage, and even fire. If you're not comfortable with this task, it's best to have a qualified mechanic perform the repair.
* The steps outlined above are general. Your 1998 Lumina's specific model and engine will determine the exact procedure. Always refer to your repair manual for detailed instructions.
This is a complex procedure. Again, consult a repair manual specific to your vehicle's year, make, model, and engine before attempting this repair. If you're unsure about any step, seek professional help.
