Here's a general outline. Specific steps may vary slightly depending on your Ranger's engine and bed configuration:
1. Preparation:
* Consult a Repair Manual: A factory service manual or a reputable repair manual specific to your 1993 Ford Ranger is *essential*. It will provide detailed diagrams, torque specifications, and crucial information specific to your vehicle.
* Gather Tools: You'll need a variety of tools including:
* Socket wrench set (metric)
* Wrenches (metric)
* Screwdrivers (Phillips and flathead)
* Fuel line disconnect tools
* Pliers
* Jack and jack stands (crucial for safety)
* Safety glasses
* Gloves
* Rags
* Container for fuel (if draining fuel lines)
* Fuel pump pliers or similar tool for fuel line clamps
* Possibly a fuel pressure gauge (to verify pressure after installation)
2. Access the Fuel Pump:
* Lower the Fuel Tank: This is usually the most difficult part. The process varies depending on whether you have a regular cab or extended cab and whether you have a 2WD or 4WD truck. The fuel tank is typically accessed from underneath the truck. You will likely need to:
* Support the vehicle safely on jack stands.
* Locate the fuel tank straps and carefully loosen/remove them.
* Disconnect the fuel filler neck.
* Disconnect the fuel lines (this is critical – use the correct disconnect tools to prevent damage).
* Disconnect the tank sending unit wiring harness.
* Carefully lower the fuel tank (often requires support to avoid straining or damaging the fuel lines).
* Alternative Access (Some Models): In some cases, you might be able to access the fuel pump through an access panel in the bed of the truck. Check your repair manual to see if this is an option for your specific model.
3. Replace the Fuel Pump:
* Once the tank is lowered (or the access panel is open), you should see the fuel pump assembly.
* Disconnect the electrical connector to the fuel pump.
* Remove the fuel pump retaining ring or bolts. This might involve special tools.
* Carefully remove the fuel pump assembly from the tank.
* Install the new fuel pump assembly, following the reverse procedure of removal. Make sure the gasket is properly seated.
* Securely tighten the retaining ring or bolts to the specified torque.
4. Reassembly:
* Reconnect the electrical connector to the fuel pump.
* Reconnect the fuel lines, ensuring they are securely attached.
* Reconnect the tank sending unit wiring harness.
* Raise the fuel tank back into place and secure it with the straps.
* Reconnect the fuel filler neck.
* Lower the vehicle.
* Reconnect the negative battery terminal.
* Check for leaks: Inspect all connections for leaks.
* Prime the fuel system: This might involve turning the ignition key on and off several times (without starting the engine) to allow the fuel pump to prime. Your repair manual will have specific instructions.
* Start the engine and check for proper operation.
Important Considerations:
* Fuel Pressure: After installation, it's wise to check the fuel pressure with a fuel pressure gauge to ensure the new pump is delivering the correct pressure.
* Safety: Gasoline is extremely flammable. Take all necessary precautions to avoid fire or explosion.
* Cleanliness: Keep the area around the fuel tank and fuel lines clean to prevent debris from entering the system.
* Professional Help: If you are not comfortable performing this repair yourself, it is best to take your vehicle to a qualified mechanic. This job can be time-consuming and requires specialized tools and knowledge.
This is a general guide. Always refer to a repair manual specific to your 1993 Ford Ranger for detailed instructions and safety precautions. Improper installation can lead to serious problems.
