Here's a general outline of the process. This is not a substitute for a proper repair manual specific to your 1998 Chevy Prism. Consult a repair manual (like a Haynes or Chilton manual) for detailed instructions, torque specifications, and diagrams unique to your vehicle's year and engine.
1. Preparation:
* Safety First: Work in a well-ventilated area. Have fire extinguisher readily available. Wear safety glasses and gloves.
* Gather Tools: You'll need a variety of tools including sockets (metric), wrenches, screwdrivers, a fuel pump removal tool (often a specialized tool, but sometimes you can improvise with sturdy straps), pliers, jack stands, jack, possibly a fuel line disconnect tool, and rags.
* Drain the fuel tank: This is crucial to minimize fuel spillage. You can siphon the fuel out using a siphon pump or by carefully removing fuel from the tank via the fuel lines (taking necessary precautions to avoid fire hazards).
* Disconnect the negative battery terminal.
2. Accessing the Fuel Pump:
* Lower the fuel tank: This is usually the most challenging part. This typically involves:
* Supporting the vehicle securely with jack stands.
* Removing the access panel under the car (often requires removing some trim pieces).
* Disconnecting the fuel lines (carefully!). You may need special tools to avoid damage and fuel leaks. Be prepared for some fuel spillage despite draining the tank. Use rags to absorb any spills.
* Disconnecting the electrical connector to the fuel pump.
* Removing the fuel tank retaining straps or bolts. Carefully lower the tank, supporting it as you go. You might need an extra pair of hands for this.
* Alternatively (Less Common): Some models allow fuel pump access through the trunk, often by removing the rear seat and possibly some interior panels. Check your repair manual for this possibility.
3. Replacing the Fuel Pump:
* Remove the fuel pump assembly: This often involves unbolting the assembly and then using the special fuel pump removal tool to pull the pump out. Sometimes a ring needs to be carefully pried loose. Be gentle to avoid damaging the tank.
* Inspect the fuel sending unit: While you have the assembly out, inspect the fuel level sending unit for damage or corrosion. This often comes as part of the pump assembly.
* Install the new fuel pump: Carefully install the new pump assembly following the reverse order of removal. Ensure the o-rings are properly seated to prevent leaks.
* Test the new pump: Before reinstalling the tank, if possible, briefly test the new pump's operation to ensure it's functioning correctly.
4. Reassembly:
* Raise and secure the fuel tank: Carefully raise the fuel tank and reinstall the retaining straps or bolts.
* Reconnect fuel lines: Securely reconnect the fuel lines and electrical connector.
* Reconnect the battery terminal.
* Add fuel: Fill the fuel tank with the correct type of fuel.
* Check for leaks: Carefully inspect all connections for leaks. Start the car and let it idle for a few minutes to check the fuel pump's operation. Check for any leaks and listen for any unusual noises.
Important Considerations:
* Repair Manual: This is absolutely crucial. Pictures and specific instructions are vital for this job.
* Fuel Pressure: After installation, you may need a fuel pressure gauge to check the fuel pressure to ensure the pump is working correctly.
* Professional Help: If you're uncomfortable with this repair, it's best to take your car to a qualified mechanic. This job can be complex, and mistakes can be dangerous.
Remember, safety is paramount. If you have any doubts about your ability to perform this repair, take your car to a qualified mechanic. Incorrectly installing a fuel pump can lead to fire hazards or damage to your vehicle.
