Here's a general outline of the process. This is not a comprehensive guide and should not be considered a substitute for a repair manual specific to your vehicle. Always consult your owner's manual and a reputable repair manual (like a Chilton's or Haynes) for detailed instructions and diagrams tailored to your specific year, engine, and trim level.
1. Preparation:
* Safety First: Disconnect the negative battery terminal.
* Gather Tools: You'll need a variety of tools, including sockets, wrenches (metric), screwdrivers (Phillips and flathead), pliers, a fuel pump removal tool (often a specialized tool to remove the retaining ring in the fuel tank), a fuel line disconnect tool, safety glasses, gloves, and rags. You might also need a jack and jack stands to safely access the fuel tank.
* Obtain Replacement Parts: Make sure you have the correct fuel pump assembly for your Ranger. The assembly usually includes the pump, strainer, and sending unit.
* Drain Fuel: If possible, partially drain the fuel tank to reduce the amount of fuel you'll be working around. This is usually done by loosening the fuel filler cap and using a siphon or fuel pump.
2. Accessing the Fuel Tank:
* Lowering the Tank (Most Common): This often involves removing the bed liner (if applicable), disconnecting the fuel lines and electrical connectors, and lowering the fuel tank using a jack and jack stands. Support the tank securely to prevent damage. Consult your repair manual for specific instructions on disconnecting lines. You'll need to support the tank as you lower it; fuel is heavy.
* Accessing from Underneath (Less Common, Depending on Model): Some Rangers might allow access to the fuel pump through an access panel in the bed or under the vehicle. Check your repair manual to see if this is an option for your truck.
3. Fuel Pump Replacement:
* Disconnect Fuel Lines and Electrical Connector: Carefully disconnect the fuel lines using the fuel line disconnect tool. Note the orientation of the lines to ensure proper reconnection. Disconnect the electrical connector to the fuel pump.
* Remove the Fuel Pump Access Cover: This is usually held in place by a retaining ring. Use the specialized fuel pump removal tool to remove this ring. Be careful not to damage the tank.
* Remove the Fuel Pump Assembly: Once the retaining ring is removed, carefully lift out the fuel pump assembly. Be mindful of the fuel level remaining in the tank.
* Install the New Fuel Pump Assembly: Carefully install the new fuel pump assembly, ensuring everything is seated correctly.
* Secure and Reassemble: Replace the retaining ring, reconnect the fuel lines and electrical connector, and carefully raise the fuel tank back into its position. Secure all connections.
4. Final Steps:
* Reconnect Fuel Lines and Electrical Connector: Double-check all connections.
* Raise Fuel Tank: Carefully raise the fuel tank back into position and secure it.
* Reconnect Battery Terminal: Reconnect the negative battery terminal.
* Prime the Fuel System: You may need to cycle the ignition key a few times (without cranking the engine) to prime the fuel system before starting the engine.
* Check for Leaks: Inspect all connections for leaks.
* Test Drive: After ensuring everything is secure and no leaks are present, start the engine and test drive the vehicle.
Important Considerations:
* Fuel Pressure: You might need a fuel pressure gauge to verify proper fuel pressure after the replacement.
* Fuel System Safety: Always work in a well-ventilated area. Never work near open flames or sparks.
* Professional Help: If you're not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Incorrect installation can lead to serious problems.
This is a general overview, and the specific steps may vary slightly depending on your vehicle's configuration. Always refer to a repair manual specific to your 1998 Ford Ranger 4x4 extended cab for detailed, step-by-step instructions and diagrams. Safety should be your top priority throughout the entire process.
