🔧 Explorer - Fuel Pump Replacement

On your Explorer, the fuel pump is part of an in-tank fuel pump module. Replacing it requires relieving fuel pressure, lowering the fuel tank, swapping the module, then reinstalling everything and priming the system.

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

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⚠️ Safety & Precautions

• 🔥 Work outside or in a well-ventilated area—fuel vapors are extremely flammable.
• 🧯 Keep sparks/flames away; no smoking; keep a fire extinguisher nearby.
• 🕶️ Wear safety glasses and fuel-resistant gloves—pressurized fuel can spray.
• 🔋 Disconnect the negative battery cable before disconnecting fuel lines or lowering the tank.
• ⬆️ Support the vehicle with jack stands on solid points—never rely on a jack.
• ⚠️ Lower the tank with a transmission jack—fuel weight shifts suddenly.

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🔧 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
• Fuel-resistant nitrile gloves
• Fire extinguisher (Class B)
• Socket set (8mm-21mm)
• Ratchet
• Breaker bar
• Torque wrench (10-200 Nm range)
• Flat-blade screwdriver
• Pry tool set
• Needle-nose pliers
• Fuel line disconnect tool set (spring-lock) (specialty)
• Transmission jack
• Drain pan
• Shop rags
• Marker pen
• Brass punch (specialty)
• Dead-blow hammer

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel pump module assembly - Qty: 1
• Fuel pump module seal O-ring - Qty: 1
• Fuel line retaining clips (if damaged) - Qty: 1

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the front wheels.
• Drive until the tank is as close to empty as possible—this makes tank removal much safer.
• Open the fuel door and loosen the gas cap to release tank vapor pressure.
• Plan a clean workspace: dirt in the tank can damage the new pump.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve fuel pressure

• Open the hood and remove the under-hood fuse box cover using a flat-blade screwdriver.
• Remove the fuel pump fuse/relay (location shown on the fuse box diagram) using needle-nose pliers.
• Start the engine and let it run until it stalls; crank for 3-5 seconds more to relieve residual pressure.
• Turn the key off and reinstall the fuse/relay later during reassembly.

Step 2: Disconnect the battery

• Disconnect the negative battery cable using a 10mm socket and ratchet.

Step 3: Raise and support the vehicle

• Lift the rear of the vehicle with a floor jack (rated 3-ton minimum).
• Set it securely on jack stands (rated 3-ton minimum) and keep wheel chocks in place.

Step 4: Support the fuel tank

• Position a transmission jack under the fuel tank and lightly snug it up so the tank is supported.
• Place a piece of cardboard on the jack pad (use shop rags if needed) to reduce slipping.

Step 5: Disconnect the filler neck and EVAP connections (rear/side of tank)

• Loosen the filler neck hose clamp(s) with a flat-blade screwdriver.
• Disconnect EVAP/vapor hoses carefully using a pry tool set as needed.
• Tip: Mark hoses before removal. Use a marker pen to label what goes where.

Step 6: Disconnect fuel lines and electrical connector (top/front area of tank)

• Lower the tank slightly (just a few inches) using the transmission jack so you can reach the top connections.
• Unplug the fuel pump module electrical connector by releasing the lock tab using a pry tool set.
• Disconnect the fuel supply line using the fuel line disconnect tool set (spring-lock) (specialty).
• Fuel line disconnect tool definition: a plastic ring tool that releases the spring inside the quick-connect fitting.
• Catch any drips in a drain pan and wipe up with shop rags.

Step 7: Remove/loosen anything blocking tank removal (AWD-specific items may apply)

• If a shield or bracket blocks the tank straps, remove fasteners using a socket set (8mm-21mm) and ratchet.
• If the rear driveshaft interferes with tank clearance, mark the flange alignment with a marker pen, then remove the flange bolts using a socket set (8mm-21mm) and breaker bar.
• On reassembly for driveshaft flange bolts: Torque to 76 Nm (56 ft-lbs).

Step 8: Remove the fuel tank straps and lower the tank

• Remove the fuel tank strap bolts using a socket set (8mm-21mm) and ratchet.
• Carefully lower the tank fully with the transmission jack, watching for any hose/wire still attached.
• On reassembly for tank strap bolts: Torque to 35 Nm (26 ft-lbs).

Step 9: Clean the pump area and remove the lock ring

• Clean dirt from the top of the module opening using shop rags (do not let debris fall into the tank).
• Use a brass punch (specialty) and dead-blow hammer to tap the lock ring counterclockwise until it releases.
• Tip: Brass reduces spark risk.

Step 10: Remove the fuel pump module and seal

• Lift the module straight up carefully; angle it as needed to clear the float arm (fuel level sender).
• Remove the old seal O-ring by hand or with a pry tool set.
• Pour any fuel from the module into a drain pan and wipe up with shop rags.

Step 11: Install the new seal and fuel pump module

• Install the new fuel pump module seal O-ring into the tank groove by hand.
• Install the new module, aligning the marks/tabs on the module to the tank index.
• Reinstall the lock ring and tap it clockwise using the brass punch (specialty) and dead-blow hammer until fully seated at the stops.

Step 12: Reinstall the tank and reconnect everything

• Raise the tank into position using the transmission jack.
• Reconnect fuel lines using the fuel line disconnect tool set (spring-lock) (specialty) if needed, then tug lightly to confirm they’re locked.
• Reconnect the electrical connector by hand until the lock clicks.
• Reconnect EVAP/vapor hoses and the filler neck; tighten clamps with a flat-blade screwdriver.
• Reinstall tank straps and tighten strap bolts using a torque wrench: Torque to 35 Nm (26 ft-lbs).
• If removed, reinstall the driveshaft using a torque wrench: Torque to 76 Nm (56 ft-lbs).

Step 13: Restore power and prime the fuel system

• Reinstall the fuel pump fuse/relay by hand (use needle-nose pliers if needed).
• Reconnect the negative battery cable using a 10mm socket and ratchet.
• Turn the key to ON (engine OFF) for 5 seconds, then OFF; repeat 3-4 times to prime the system.

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✅ After Repair

• Start the engine and let it idle while you inspect under the vehicle for leaks (use safety glasses and a bright light).
• Check for any fuel smell around the filler neck and tank top connections.
• Road test for 10-15 minutes, then recheck for leaks.
• If a check engine light appears, scan for codes—an EVAP hose left loose is a common cause.

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💰 DIY vs Shop Cost

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

DIY Cost: $250-$650 (parts only)

You Save: $650-$950 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-5 hours.

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🎯 Ready to get started?

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