Here's a general overview, but consult a repair manual specific to your 1999 Oldsmobile Cutlass for detailed instructions and diagrams. The exact location and access method may vary slightly depending on the engine and body style.
1. Safety First: Disconnect the negative battery terminal to prevent accidental electrical shorts. Support the car securely on jack stands – never work under a car supported only by a jack. Wear safety glasses.
2. Locate the Fuel Pump: The fuel pump is typically located inside the fuel tank, under the rear passenger seat area.
3. Access the Fuel Tank: This is usually the most challenging part. You will likely need to:
* Drop the fuel tank: This often requires removing the fuel tank straps, fuel lines, and electrical connectors. Be extremely cautious when working around fuel lines. Fuel fumes are flammable and explosive. You may need to relieve pressure in the fuel system – this may involve turning the ignition key on and off several times before disconnecting the fuel pump. Consult your repair manual.
* Access panel in trunk (less likely): Some models might have a dedicated access panel in the trunk floor specifically for the fuel pump. Check your repair manual for this possibility.
4. Remove the Fuel Pump: Once you have access to the fuel tank, you'll find the fuel pump assembly. It is usually secured by a retaining ring or clamp. Remove this to access the pump. The assembly includes the pump, sending unit (for the fuel gauge), and fuel filter.
5. Disconnect Electrical Connectors and Fuel Lines: Carefully disconnect the electrical connectors and fuel lines. Have rags or shop towels ready to absorb any spilled fuel.
6. Remove and Replace (if necessary): Carefully remove the fuel pump assembly. If you are replacing the pump, install the new one, ensuring all seals and connections are secure.
7. Reassembly: Reinstall the fuel pump assembly, reconnect the fuel lines and electrical connectors, reinstall the fuel tank, and reconnect the negative battery terminal.
8. Prime the Fuel System: You may need to prime the fuel system, typically done by turning the ignition key on and off several times to allow the pump to fill the lines.
Disclaimer: This information is for general guidance only. Improper repair can be dangerous and may void your vehicle's warranty. Always consult a professional mechanic or your vehicle's repair manual before attempting any repairs. Incorrect procedures can lead to serious injury, fire, and vehicle damage.
