Safety First:
* Disconnect the battery's negative terminal. This is crucial to prevent sparks and electrical shorts.
* Work in a well-ventilated area. Gasoline fumes are highly flammable and dangerous.
* Wear safety glasses and gloves.
* Have a fire extinguisher nearby.
Tools You'll Need (likely, specifics depend on your year and model):
* Socket set (various sizes)
* Wrenches (various sizes)
* Screwdrivers (Phillips and flathead)
* Fuel line disconnect tools (may be needed)
* New fuel pump (ensure it's compatible with your Fiero's fuel system and pressure requirements)
* Fuel filter (replace this while you're at it)
* Jack and jack stands (to safely support the vehicle)
* Shop rags
* Safety glasses
* Gloves
* Drain pan
Procedure (General Steps - Consult a Repair Manual):
1. Prepare the Vehicle: Jack up the rear of the Fiero and securely support it with jack stands. Locate the fuel pump access panel (usually under the car, near the fuel tank). This may involve removing a section of underbody paneling.
2. Disconnect Fuel Lines and Electrical Connections: Carefully disconnect the fuel lines leading to and from the fuel pump. Use fuel line disconnect tools if necessary to avoid damaging the lines. Be prepared for some fuel spillage, use the drain pan. Also, disconnect the electrical connector(s) to the old fuel pump.
3. Remove the Fuel Pump Access Panel: Access to the fuel pump varies by model year. You may need to remove bolts, clips, or other fasteners to gain access to the fuel pump.
4. Remove the Old Fuel Pump: This usually involves removing bolts or clamps holding the pump assembly in place. Be careful as there may be other components within the access panel.
5. Install the New Fuel Pump: Carefully install the new electric fuel pump, ensuring it's correctly seated and oriented. Pay close attention to any gaskets or seals provided with the new pump.
6. Reconnect Fuel Lines and Electrical Connections: Carefully reconnect the fuel lines and the electrical connector(s) to the new fuel pump. Ensure the lines are securely attached and there are no leaks.
7. Reinstall the Access Panel: Replace the fuel pump access panel, securing it with the bolts or clips.
8. Lower the Vehicle: Carefully lower the Fiero from the jack stands.
9. Check for Leaks: Carefully inspect the fuel lines and connections for any leaks.
10. Prime the Fuel System (Very Important): Many modern electric fuel pumps require priming. This often involves turning the ignition key on and off several times (without starting the engine) to allow the pump to fill the lines. Consult your new pump's instructions for priming procedures.
11. Start the Engine: After priming, carefully start the engine and check for leaks again. Listen for any unusual sounds from the fuel pump.
12. Check Fuel Pressure (Optional but Recommended): Use a fuel pressure gauge to verify that the fuel pump is delivering the correct fuel pressure. This is crucial to ensure proper engine operation and prevents damage.
Important Considerations:
* Fuel Pump Compatibility: Ensure your new electric fuel pump is compatible with your Fiero's fuel system pressure and flow requirements. Using the wrong pump can cause serious problems.
* Fuel Pressure Regulator: The Fiero's fuel pressure regulator might be integrated into the fuel pump assembly or be a separate component. Ensure its correct functioning after the replacement.
* Year-Specific Differences: Fiero models across different years have variations in their fuel systems. Consult a repair manual specific to your vehicle's year and model.
Disclaimer: This is a general overview and should not be considered a complete guide. Working with fuel systems is dangerous. If you are not comfortable performing this repair, consult a qualified mechanic. Improper installation can result in serious injury or damage to your vehicle. Always refer to a reputable repair manual for your specific Fiero model year.
