🔧 Explorer - Fuel Pump Replacement

On your Explorer, the fuel pump is part of an in-tank fuel pump module. Replacing it usually requires lowering the fuel tank so you can remove the pump lock ring and lift the module out safely.

Difficulty Level: Advanced | Estimated Time: 3-6 hours

Assumption: your Explorer does not have an access panel under the rear seat; tank must be lowered.

---

⚠️ Safety & Precautions

• ⚠️ Work outside or in a very well-ventilated area—fuel vapors are flammable.
• ⚠️ No smoking, no flames, no hot work lights, and keep a fire extinguisher nearby.
• ⚠️ Relieve fuel pressure before disconnecting any fuel line to prevent spray.
• ⚠️ Disconnect the negative battery cable to prevent sparks.
• ⚠️ Support the tank with a jack before removing strap bolts—the tank can drop suddenly.
• ⚠️ Wear safety glasses and fuel-resistant gloves—fuel in eyes is an emergency.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• Fire extinguisher (Class B)
• Socket set 8mm-21mm
• Ratchet (3/8" drive)
• Breaker bar (1/2" drive)
• Torque wrench (10-200 Nm range)
• Flat-blade screwdriver
• Trim clip removal tool
• Fuel line disconnect tool set (specialty)
• Transmission jack or jack adapter cradle (specialty)
• Brass drift punch (specialty)
• Small hammer
• Drain pan
• Shop rags
• Permanent marker

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel pump module assembly (in-tank) - Qty: 1
• Fuel pump module tank seal/O-ring - Qty: 1
• Fuel pump lock ring - Qty: 1
• Fuel tank strap bolts - Qty: 2

---

📋 Before You Begin

• Park on level ground, set the parking brake, and chock the front wheels.
• Drive the fuel level down as low as possible—less fuel makes the tank much lighter.
• Open the fuel door and loosen the gas cap to reduce vapor pressure.
• Disconnect the negative battery cable using a socket (typically 10mm).
• Plan to keep dirt out of the tank—cleanliness matters for pump life.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve fuel pressure

• Open the hood.
• Remove the fuel pump fuse/relay from the under-hood fuse box (use the fuse-box diagram on the cover and a fuse puller if equipped).
• Start the engine and let it run until it stalls, then crank for 3-5 seconds to relieve any remaining pressure.
• Turn the key off.
• Tip: Put the fuse/relay in your cupholder.

Step 2: Raise and support the vehicle

• Use a floor jack to lift the rear at the proper jacking point.
• Set the rear on jack stands placed under solid frame/support points.
• Shake the vehicle gently to confirm it is stable before going underneath.

Step 3: Support the fuel tank

• Position a transmission jack or jack adapter cradle (specialty) under the center of the fuel tank.
• Raise the jack just enough to support the tank—do not lift the vehicle.
• Tip: A wide wood board helps spread load.

Step 4: Disconnect the fuel filler neck area (as needed)

• At the filler neck area, remove any splash shields using a trim clip removal tool and 8mm socket if equipped.
• Loosen any hose clamps you can access using a flat-blade screwdriver.
• Move hoses carefully—old hoses can crack if twisted hard.

Step 5: Lower the tank slightly to access connectors and lines

• Remove the fuel tank strap bolts using a socket set and ratchet while the tank is supported by the jack.
• Slowly lower the jack a few inches to create working space above the tank.
• Torque to 48 Nm (35 ft-lbs) when reinstalling the strap bolts.

Step 6: Disconnect electrical connectors

• Unplug the fuel pump module electrical connector(s) on top of the tank (use a flat-blade screwdriver gently to release the lock tab if needed).
• Unplug any EVAP/vapor-related connector(s) you can reach.

Step 7: Disconnect fuel and vapor lines

• Place a drain pan under the connection points and keep shop rags ready.
• Use a fuel line disconnect tool set (specialty) to separate the quick-connect fittings (this tool slides into the fitting to release the internal spring lock).
• Cap or wrap open lines with clean rags to keep dirt out.

Step 8: Lower and remove the fuel tank

• Double-check that all hoses, connectors, and lines are free.
• Slowly lower the tank fully using the transmission jack.
• Slide the tank out from under the vehicle.

Step 9: Clean the pump area before opening the tank

• Use shop rags to wipe away dust and debris around the pump lock ring area.
• Mark the module orientation using a permanent marker so the new one goes in the same way.
• Tip: Dirt in the tank can kill a new pump.

Step 10: Remove the lock ring and fuel pump module

• Use a brass drift punch (specialty) and small hammer to tap the lock ring counterclockwise until it releases.
• Lift the lock ring off.
• Carefully lift the fuel pump module out of the tank, angling as needed to clear the float arm.
• Remove the old tank seal/O-ring by hand.

Step 11: Install the new seal and new fuel pump module

• Install the new tank seal/O-ring into the tank opening (clean and fully seated).
• Carefully lower the new pump module into the tank, keeping the float arm from bending.
• Align the module using your orientation mark.
• Install the new lock ring and tap it clockwise using the brass drift punch (specialty) and small hammer until fully locked.

Step 12: Reinstall the fuel tank

• Slide the tank back under the vehicle and raise it using the transmission jack.
• Reconnect fuel and vapor lines until you feel/hear a solid “click.”
• Reconnect all electrical connectors.
• Reinstall the straps and start the strap bolts by hand to prevent cross-threading.
• Torque to 48 Nm (35 ft-lbs) on the strap bolts.

Step 13: Reinstall shields and lower the vehicle

• Reinstall any splash shields using a trim clip removal tool and 8mm socket as applicable.
• Lower the vehicle off the jack stands using the floor jack.

Step 14: Restore power and prime the system

• Reinstall the fuel pump fuse/relay by hand.
• Reconnect the negative battery cable using a 10mm socket.
• Torque to 7 Nm (62 in-lbs) on the battery terminal clamp.
• Turn the key to ON (do not start) for 5 seconds, then OFF for 5 seconds; repeat 3-4 times to prime the fuel system.
• Start the engine.

---

✅ After Repair

• Inspect for leaks with the engine idling—look and smell around the tank area and fuel line connections.
• Take a short test drive, then recheck for leaks again.
• If the check engine light comes on, scan for codes—loose EVAP connections are common after tank work.
• Refill fuel and confirm the fuel gauge reads normally (the float arm controls the gauge).

---

💰 DIY vs Shop Cost

Shop Cost: $900-$1,600 (parts + labor)

DIY Cost: $250-$700 (parts only)

You Save: $650-$900 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-6 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.