Safety First!
* Disconnect the battery's negative terminal before starting any work. This prevents accidental sparks.
* Work in a well-ventilated area. Fuel fumes are flammable and hazardous.
* Wear safety glasses to protect your eyes from debris.
* Have a fire extinguisher readily available.
* Use proper fuel-handling procedures. Don't smoke near fuel.
Tools and Materials:
* Repair manual specific to your 1985 Pontiac Fiero 2.8L
* Socket wrench set (metric)
* Screwdrivers (Phillips and flathead)
* Fuel pump pliers (or similar tool to clamp fuel lines)
* New fuel pump (ensure it's the correct part number for your car)
* New fuel filter (recommended)
* Safety glasses
* Gloves
* Jack and jack stands (or ramps)
* Drain pan
* Shop towels or rags
* Possibly a fuel pressure gauge (to test after installation)
Procedure (General Steps - Refer to your repair manual for specifics):
1. Vehicle Preparation: Raise the rear of the car securely using a jack and jack stands. Disconnect the negative battery terminal.
2. Fuel Line Disconnection: Carefully locate the fuel lines leading to the fuel tank. Use fuel line pliers or clamps to disconnect them. Have a drain pan ready to catch any spilled fuel. Be extremely careful not to damage the lines. There may be pressure in the lines, so relieve it as needed.
3. Fuel Tank Access: This is the most car-specific step and will vary depending on your Fiero's configuration. You'll likely need to remove or loosen the access panel or cover to reach the fuel pump. This often involves removing the fuel tank straps. Consult your repair manual for detailed instructions on this stage. Some Fieros might require dropping the fuel tank partially or completely.
4. Fuel Pump Removal: Once you have access to the fuel pump, you'll need to disconnect the electrical connector and any other attached components (such as the fuel level sender). Your repair manual will show you how to remove the pump assembly from the tank. This may involve removing retaining bolts or clips.
5. Installation of the New Fuel Pump: Install the new fuel pump in reverse order of removal. Ensure all connections are secure. Make sure the new fuel pump's gasket is properly installed.
6. Reassembly: Carefully put everything back together. Reconnect the fuel lines securely and double-check all connections. Lower the fuel tank (if you removed it).
7. Reconnect the Battery: Reconnect the battery's negative terminal.
8. Testing: Before driving, turn the ignition key to the "on" position (without starting the engine) to allow the fuel pump to prime and listen for it to run. Then, start the car and let it run for a while to make sure everything is functioning correctly. A fuel pressure gauge can be used to verify proper fuel pressure.
Important Considerations:
* Fuel tank venting: Make sure the fuel tank is properly vented. A clogged vent can cause problems.
* Fuel pump relay: A faulty fuel pump relay can mimic a bad fuel pump. Test the relay before replacing the pump.
* Wiring: Inspect the wiring leading to the fuel pump for any damage or corrosion.
* Fuel filter: While not strictly necessary, replacing the fuel filter at the same time is highly recommended.
This is a complex job. If you're not comfortable with automotive repair, it's strongly recommended that you take your Fiero to a qualified mechanic. Incorrectly performed repairs can lead to serious injury or fire. Always prioritize safety!
