Here's a general outline. Always consult a repair manual specific to your 1994 Ford Aspire for detailed instructions and diagrams. Variations exist based on engine type and trim level.
Safety Precautions:
* Disconnect the negative battery terminal before starting any work.
* Work in a well-ventilated area. Fuel fumes are flammable and dangerous.
* Wear safety glasses and gloves.
* Have a fire extinguisher nearby.
* Use appropriate jack stands. Never work under a vehicle supported only by a jack.
* Be aware of sharp edges and hot components under the vehicle.
Tools You'll Likely Need:
* Jack and jack stands
* Socket wrench set (metric)
* Fuel line disconnect tool (essential)
* Wrenches (various sizes)
* Screwdrivers (Phillips and flathead)
* New fuel pump assembly (ensure it's the correct one for your Aspire)
* Fuel pump installation tool (may be needed; some pumps have retainers that require a special tool)
* Shop rags or towels
* Safety glasses and gloves
* Torque wrench (recommended for tightening bolts to proper specifications)
* Container to catch spilled fuel (and absorb spilled fuel)
General Steps (Consult your repair manual for precise details):
1. Lower the fuel tank: This usually involves loosening straps or bolts securing the tank. You may need to remove the spare tire and possibly other components to access the tank. This step varies greatly depending on your specific vehicle.
2. Disconnect the fuel lines: This is the most critical part and requires extreme caution. Use the fuel line disconnect tool to carefully separate the fuel lines from the pump. Have rags ready to absorb any spilled fuel.
3. Disconnect the electrical connector: Unplug the electrical connector from the fuel pump.
4. Remove the fuel pump assembly: This often involves removing an access plate or cover on top of the fuel tank. The pump is typically held in place by a retaining ring or clamp that might require a specialized tool.
5. Install the new fuel pump: Carefully install the new fuel pump assembly, ensuring it's seated correctly.
6. Reconnect everything: Reconnect the electrical connector, fuel lines (using the fuel line disconnect tool again), and any other components you removed. Double-check all connections.
7. Raise the fuel tank: Carefully raise the fuel tank back into its position and secure it.
8. Reconnect the battery: Connect the negative battery terminal.
9. Prime the fuel system: You may need to crank the engine (with the key, but without starting) for a few seconds to prime the fuel system.
10. Test the vehicle: Start the car and check for leaks around the fuel lines and tank. Monitor the engine for proper operation.
Important Considerations:
* Fuel pressure: The fuel system is under pressure. Releasing pressure before disconnecting lines is crucial; your repair manual will explain how to safely do this.
* Fuel pump strainer: The fuel pump often includes a fuel strainer (sock). This should be replaced when you replace the pump.
* OEM vs. Aftermarket: OEM (Original Equipment Manufacturer) parts are generally preferred, but high-quality aftermarket pumps are also available.
This is a simplified overview. Do not attempt this repair without consulting a detailed repair manual for your specific 1994 Ford Aspire. If you're not comfortable with this repair, take your vehicle to a qualified mechanic. Working with fuel systems is dangerous; improper procedures can result in injury or fire.
