Here's a general outline. Specific steps might vary slightly depending on the engine (3.1L, 3.4L, 5.0L, 5.7L) and whether you have a fuel-injected or carbureted model (highly unlikely to be carbureted in a '92). Always consult a repair manual specific to your Firebird's engine and year for detailed instructions and diagrams. A Haynes or Chilton manual would be a good investment.
1. Preparation:
* Safety First: Disconnect the negative battery cable.
* Gather Tools: You'll need a variety of tools, including sockets (various sizes), wrenches, screwdrivers (Phillips and flathead), pliers, a fuel line disconnect tool, jack stands, jack, safety glasses, gloves, and possibly a fuel pressure gauge.
* Drain the Fuel Tank (Optional but Recommended): This significantly reduces the risk of spillage. You can siphon the gas out using a siphon pump.
* Locate the Fuel Pump: It's typically located inside the fuel tank, accessed through the trunk.
2. Accessing the Fuel Pump:
* Lower the Fuel Tank (Usually Required): This involves removing the fuel filler neck, fuel lines, and possibly other components like the fuel tank straps or skid plate. The process will vary depending on your specific model. The repair manual will detail this. Support the tank with jack stands once it's lowered.
* Remove the Fuel Pump Access Cover: Once the tank is accessible, you'll find a cover or access panel on the top of the tank. This is where the fuel pump assembly is located.
3. Replacing the Fuel Pump:
* Disconnect Electrical Connections: Carefully disconnect the electrical connector from the fuel pump.
* Disconnect Fuel Lines: Use a fuel line disconnect tool to carefully disconnect the fuel supply and return lines. Have rags ready to absorb any spilled fuel.
* Remove the Fuel Pump Assembly: This often involves removing retaining bolts or clips holding the pump assembly in place. The assembly may also include the fuel sending unit (which shows your fuel level on the gauge).
* Install the New Fuel Pump Assembly: Install the new assembly, ensuring it's properly seated and all connections are secure.
* Reconnect Fuel Lines and Electrical Connector: Carefully reconnect the fuel lines and the electrical connector. Double-check everything is secure.
4. Reassembly:
* Raise the Fuel Tank: Carefully raise the fuel tank back into its position.
* Reconnect Fuel Filler Neck and Other Components: Reconnect any components removed earlier.
* Reconnect Battery Terminal: Reconnect the negative battery cable.
5. Priming the System and Testing:
* Prime the Fuel Pump: Your car might have a priming procedure; check your manual.
* Check for Leaks: Inspect all fuel connections for leaks.
* Start the Engine: Start the car and listen for the fuel pump to run. Check for any fuel leaks or problems.
Important Considerations:
* Fuel Pressure: A fuel pressure gauge can help diagnose fuel pump problems before replacement.
* Fuel Filter: Consider replacing the fuel filter at the same time. It's usually located near the engine.
* Safety: Gasoline is flammable and fumes are hazardous. Work in a well-ventilated area, away from any ignition sources.
This is a general guide. You absolutely must consult a repair manual specific to your 1992 Pontiac Firebird before attempting this repair. Failure to do so could lead to damage to your vehicle, injury, or even fire. If you are not comfortable performing this repair yourself, take it to a qualified mechanic.
