🔧 Expedition - Fuel Pump Replacement

On your Expedition, the fuel pump is part of an in-tank fuel pump module. Replacing it usually means safely lowering the fuel tank, swapping the module, then reinstalling everything without damaging fuel lines or the tank seal.

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

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⚠️ Safety & Precautions

• ⚠️ Work outside or in a well-ventilated area; fuel vapors ignite easily.
• ⚠️ No smoking, no sparks, no trouble lights with hot bulbs; use an LED work light.
• ⚠️ Relieve fuel pressure before disconnecting any fuel line to prevent fuel spray.
• ⚠️ Disconnect the negative battery cable to reduce fire risk.
• ⚠️ Support the tank with a transmission jack before loosening tank straps.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Wheel chocks
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Transmission jack
• 8mm socket
• 10mm socket
• 13mm socket
• 15mm socket
• 3/8" drive ratchet
• 3/8" drive extensions (3" and 6")
• Torque wrench (10-150 ft-lbs)
• Flat trim tool
• Fuel line quick-disconnect tool set (specialty)
• Brass punch and hammer
• Shop rags
• Drain pan

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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 - Qty: 1 set

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Drive until the tank is near 1/4 full; a lighter tank is much safer to lower.
• Open the fuel door and loosen the fuel cap area (capless system) to help vent pressure.
• Disconnect the negative battery cable using a 10mm socket.
• Have a fire extinguisher nearby.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve fuel system pressure

• Open the hood.
• Locate the under-hood fuse box.
• Remove the fuel pump fuse/relay (layout is on the fuse box cover) using a flat trim tool.
• Start the engine and let it run until it stalls.
• Crank for 3 seconds two more times to bleed residual pressure.

Step 2: Raise and support the Expedition

• Lift the rear of your Expedition using a floor jack (rated 3-ton minimum).
• Set it securely on jack stands (rated 3-ton minimum) at the frame.

Step 3: Support the fuel tank

• Position a transmission jack under the fuel tank.
• Use a block of wood on the jack saddle (if available) to spread the load.

Step 4: Remove the tank shields (if equipped)

• Remove any fuel tank shield/skid fasteners using an 13mm socket and 3/8" drive ratchet.
• Set shields and bolts aside in order.

Step 5: Disconnect filler neck and vent connections

• At the tank end, loosen hose clamps (if present) using an 8mm socket.
• Carefully work the filler and vent hoses off the tank nipples by hand.
• Twist the hose to break it free.

Step 6: Disconnect electrical connectors

• Unplug the fuel pump module connector and any EVAP connectors near the tank using a flat trim tool to release locks if needed.
• Never pull on wires—pull on the connector body.

Step 7: Disconnect fuel line(s) at the tank module

• Place a drain pan and shop rags under the connection.
• Release the line using the fuel line quick-disconnect tool set (specialty).
• Expect a small amount of fuel to drip; catch it and wipe immediately.

Step 8: Remove the fuel tank straps

• With the tank supported by the transmission jack, remove the strap bolts using a 15mm socket and 3/8" drive ratchet.
• Slowly lower the tank a few inches and re-check for any remaining hoses/wiring that may still be attached.
• Lower the tank fully and slide it out from under the vehicle.
• When reinstalling straps: Torque to 60 Nm (44 ft-lbs).

Step 9: Clean the area around the fuel pump module

• Blow off dirt (or wipe) around the module opening using shop rags.
• This prevents debris from falling into the tank.

Step 10: Remove the fuel pump lock ring

• Use a brass punch and hammer to tap the lock ring counterclockwise until it releases.
• Brass helps reduce spark risk.

Step 11: Remove and replace the fuel pump module

• Lift the module out carefully, angling it to clear the float arm.
• Remove the old seal and install the new fuel pump module seal O-ring.
• Install the new module into the tank, making sure it seats evenly on the seal.

Step 12: Install the lock ring

• Reinstall the lock ring and tap it clockwise using the brass punch and hammer until fully seated/locked.
• Verify the ring is evenly locked all the way around.

Step 13: Reinstall the tank

• Lift the tank back into place using the transmission jack.
• Reconnect the fuel line(s) until you hear/feel a positive click.
• Reconnect all electrical connectors.
• Reconnect filler and vent hoses and tighten clamps using an 8mm socket.
• Install the tank straps and tighten strap bolts: Torque to 60 Nm (44 ft-lbs).

Step 14: Reinstall shields and lower the vehicle

• Reinstall any shields using an 13mm socket.
• Shield fasteners: Torque to 25 Nm (18 ft-lbs).
• Lower your Expedition off the jack stands using a floor jack (rated 3-ton minimum).

Step 15: Restore power and prime the fuel 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).
• Turn the key to ON (engine off) for 10 seconds, then OFF for 10 seconds; repeat 3 times to prime.
• Start the engine and let it idle.

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✅ After Repair

• Inspect for leaks at the fuel line connection and around the tank while the engine idles.
• Test drive for 10-15 minutes, then re-check for any fuel smell or seepage.
• If you have a check engine light, scan for codes and confirm none return after the test drive.

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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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