How To Replace a Fuel Pump In A 1998-1999 Ford Ranger

There’s two approaches to replacing a fuel pump in a 1998-1999 Ford Ranger. The first is to drop the tank out from the bottom, which is the more difficult approach. The easiest way is to slide the bed backwards a couple feet to access the pump from above. This is the method we’ll be laying out in this post.

Before starting this job, remember that gasoline vapors are explosive. Be sure to take proper safety precautions.

  1. If possible, run the truck until it is almost out of gas. Or, siphon as much gas as possible out of the tank.
  2. Do this job in a very well ventilated area. If possible, do the job outdoors.
  3. Make sure there is no source of sparks or flame while you are doing the job.
  4. Disconnect the wiring harness that connects to the taillights. The connector is located near the rear passenger-side wheel. The harness will stay attached to the bed.
  5. Detach the gas filler neck from the bed by removing the three hex head screws that hold it in place. Once the screws are removed, push the neck into the bed area. Be careful not to catch the filler neck when moving the bed back.
  6. Remove the six T55 torx head bolts that hold the bed onto the truck frame and then move the bed just a couple feet back from the cab. You'll need a helper for this step.
  7. PRO TIP: Set a 4x4 on the bumper and rest the bed on that. This supports the bed well enough that you don't have to completely remove it. The lower front portion of the bedsides can rest on the tires.
  8. Once the bed is moved back, you’ll be able to see the fuel pump near the cab. Remove the retaining clips from the fuel line fittings, and disconnect the electrical harnesses from the fuel pump.
  9. Use a brush and/or compressed air to remove dirt from the top of the tank.
  10. Use a large pair of channel locks or a fuel tank lock ring tool to remove the fuel tank lock ring. (You can rent a lock ring tool from your local auto parts store.)
  11. The old fuel pump is now ready to be taken out of the fuel tank. Once the old pump is removed, do a visual inspection on the inside of your fuel tank to ensure it’s free of dirt and debris, and doesn’t need to be cleaned.
  12. You’ll need to remove the fuel tank pressure sensor from the old fuel pump and transfer it onto the new pump. (You may find it easier to reinstall the pressure sensor after the new fuel pump is in place.)
  13. Inspect the seal under the lock ring to make sure it is in good condition.
  14. Take the new fuel pump and insert it into the tank. Once all the notches are lined up reinstall the fuel tank lock ring. Use the channel locks or the fuel tank lock ring tool to tighten everything up snugly.
  15. Reconnect the electrical connectors and the fuel tank pressure sensor. Then reconnect the lines with new clips, making sure that you hear a ‘snap’ and that they’re locked on.
  16. Now that everything is connected, you’re ready to test your fuel pump to ensure that everything works. (Be sure to replace the gas cap onto the gas filler neck beforehand.)
  17. Check to make sure you have the correct pressure. Turn your ignition key to prime the lines (don’t start the vehicle yet) and you should see the pressure at about 55-60 psi.
  18. Start the truck. Go back to the fuel pump and check for leaks and any other obvious issues.
  19. Once you’re sure everything is running well, slide the bed back into position. Re-install the bed bolts, screw the fuel filler neck in place and you’re ready to hit the road!

If you would like to see a detailed video of this process, click on this link.