🔧 F-150 - Fuel Pump Module Replacement

The fuel pump is part of a module installed through the top of your F-150’s fuel tank. The tank must be safely drained, supported, and lowered before the module can be replaced.

Assumption: These instructions cover the original-style gasoline/flex-fuel tank and in-tank pump module; the replacement module must match the installed fuel-tank capacity.

Difficulty Level: Advanced | Estimated Time: 4-6 hours

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⚠️ Safety & Precautions

• 🔥 Work outdoors or in a highly ventilated area, away from flames, heaters, sparks, and smoking materials.
• 🧯 Keep a Class B fire extinguisher within immediate reach.
• 🛢️ Run the fuel level as low as possible first. A full tank is extremely heavy and difficult to control.
• ⚡ Relieve fuel pressure before opening a fuel connection, then disconnect the negative battery cable.
• 🚫 Never use an incandescent work light, shop vacuum, impact wrench, or unapproved electric pump around gasoline vapors.
• 🛞 Support your F-150 with jack stands under the frame. Never work beneath a vehicle supported only by a jack.
• ⚠️ The fuel tank is plastic. Use a broad transmission-jack pad and do not crush or puncture it.
• 🔨 Do not strike the fuel-pump retaining ring with steel tools. A spark can ignite fuel vapor.

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🔧 Required Tools

You'll need the following tools for this repair:

• Class B fire extinguisher
• Safety glasses
• Fuel-resistant nitrile gloves
• Wheel chocks
• Floor jack rated 3-ton minimum
• Jack stands rated 3-ton minimum
• Transmission jack rated 1,000-pound minimum
• 10mm socket
• 13mm socket
• 15mm socket
• 3/8-inch drive ratchet
• 3/8-inch drive 12-inch extension
• 3/8-inch drive torque wrench rated 10-80 Nm
• Fuel-line disconnect tool set sized 5/16-inch and 3/8-inch
• Fuel-pump lock-ring tool 310-123 or equivalent (specialty)
• Non-sparking brass drift (specialty)
• Rubber mallet
• Gasoline-rated fluid-transfer pump (specialty)
• Gasoline-approved fuel containers
• Plastic trim removal tool
• Long-nose pliers
• Compressed-air blow gun with regulated air supply
• Shop towels
• Paint marker

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Complete in-tank fuel pump module matched to installed tank capacity and flex-fuel system - Qty: 1
• Fuel pump module sealing O-ring - Qty: 1
• Fuel pump module retaining ring - Qty: 1
• Fuel-safe silicone lubricant - Qty: 1
• Fuel-line retaining clips - Qty: As required
• Gasoline-absorbent pads - Qty: As required

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📋 Before You Begin

• 🅿️ Park your F-150 outdoors on firm, level ground. Shift into Park, apply the parking brake, and chock the front wheels.
• ⛽ Drive until the tank is nearly empty. The tank has no convenient service drain plug.
• 📏 Match the replacement module to the installed tank capacity. Extended-cab trucks can have different tank options, and the pump-module depth differs.
• 🧹 Clean dirt from around every fuel connection before disconnecting it.
• 📱 No infotainment service mode, scan-tool fuel-pump command, coding, or battery registration is required.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve Fuel-System Pressure

• Open the under-hood power-distribution box and use the diagram inside its cover to identify and remove the fuel-pump power fuse with long-nose pliers.
• Start the engine and let it run until it stalls. Crank it for about five additional seconds to release remaining pressure.
• Turn the ignition off and use a 10mm socket to disconnect the negative battery terminal. Isolate the cable so it cannot spring back onto the post.
• Reinstall the fuel-pump fuse after pressure has been relieved.

Step 2: Raise and Secure the Truck

• Use the 3-ton floor jack beneath an approved rear-frame lifting point.
• Place the 3-ton jack stands under both frame rails, ahead of the rear suspension mounting area.
• Lower your F-150 onto the stands and gently push the body to verify stability.
• Keep the suspension hanging for maximum tank clearance.

Step 3: Remove Excess Fuel

• Remove the fuel cap.
• Use only a gasoline-rated fluid-transfer pump and approved fuel containers to remove as much fuel as possible through the filler neck.
• Seal the containers immediately and move them away from the work area.
• Never siphon gasoline by mouth or use a drill-powered transfer pump.

Step 4: Disconnect the Filler and Vent Hoses

• Locate the large filler hose and smaller vent hose where they connect to the tank.
• Use a 10mm socket or long-nose pliers, depending on the installed clamp style, to release both clamps.
• Use a plastic trim removal tool to gently break each hose loose. Twist and pull the hoses from their tank necks without prying against the plastic tank.
• Use shop towels to catch residual fuel.

Step 5: Support the Fuel Tank

• Center the transmission jack beneath the tank and use a broad padded saddle to spread the load.
• Raise the jack until it just contacts the tank. Do not lift the truck from its stands.
• Use a paint marker to mark each tank strap’s installed position.

Step 6: Remove the Tank Straps

• Use a 13mm or 15mm socket, 12-inch extension, and 3/8-inch ratchet to remove the fuel-tank strap bolts. Fastener size can differ with the installed tank option.
• Lower or swing the straps away while keeping the tank fully supported by the transmission jack.
• Inspect the straps and mounting points for severe rust, bending, or damaged insulation.

Step 7: Lower the Tank Partway

• Slowly lower the transmission jack only far enough to reach the connections on top of the tank.
• Watch the filler hoses, wiring, vapor lines, and fuel line continuously. Stop immediately if anything becomes tight.
• Use shop towels to clean the connection area before opening any fitting.

Step 8: Disconnect Wiring, Fuel, and Vapor Lines

• Press the electrical-connector lock by hand or with the plastic trim removal tool, then unplug the pump-module connector. Pull on the connector body, not its wires.
• Remove any colored secondary safety clip from the fuel fitting with the plastic trim removal tool.
• Use the correctly sized 5/16-inch or 3/8-inch fuel-line disconnect tool to release the fuel line. A disconnect tool slides inside a spring-lock fitting to release its internal retainer.
• Release the evaporative-emissions vapor-line tabs by hand and pull the connector straight off. Do not force the brittle plastic fitting.
• Use shop towels to catch the small amount of fuel remaining in the line.

Step 9: Remove the Fuel Tank

• Verify that every hose, line, connector, and strap is free.
• Use the transmission jack to lower the tank slowly.
• Roll the tank from beneath your F-150 and leave it supported securely on the jack or a stable padded surface.

Step 10: Clean and Mark the Pump Module

• Use regulated compressed air and shop towels to remove all dirt from the module flange and retaining-ring area. Wear safety glasses and direct debris away from yourself.
• Use the paint marker to mark the pump module’s orientation relative to the tank.
• Do not allow dirt to enter the open tank.

Step 11: Remove the Pump Module

• Fit fuel-pump lock-ring tool 310-123 or equivalent over the retaining ring and turn it counterclockwise with the 3/8-inch ratchet.
• If access prevents use of the ring tool, tap only a non-sparking brass drift with a rubber mallet. Never use a steel punch or chisel.
• Remove the retaining ring, then lift the module slowly while tilting it to clear the float arm.
• Drain the module into an approved fuel container. Remove and discard the old sealing O-ring.

Step 12: Install the New Pump Module

• Compare the old and new modules. Confirm equal height, matching connectors, matching fuel fittings, and the same float-arm direction.
• Clean the tank’s sealing surface with a shop towel. Do not use abrasive paper or metal scrapers.
• Lightly coat the new sealing O-ring with fuel-safe silicone lubricant and place it in the tank groove.
• Lower the new module into the tank, carefully guiding the float arm past the opening.
• Align the module with the paint mark and molded tank locator.
• Install the new retaining ring with lock-ring tool 310-123 and the torque wrench. Torque to 80 Nm (59 ft-lbs).
• Confirm the seal remains flat and is not pinched beneath the module flange.

Step 13: Reinstall and Connect the Tank

• Use the transmission jack to raise the tank close enough to reconnect its top fittings.
• Push each vapor fitting on by hand until it clicks, then gently pull back to verify it is locked.
• Push the fuel line onto the module fitting by hand until it clicks. Reinstall its secondary safety clip and perform a gentle pull check.
• Connect the electrical plug by hand and engage its locking tab.
• Route every line exactly as originally installed. Nothing should be trapped above a strap or against a sharp frame edge.

Step 14: Secure the Tank and Hoses

• Use the transmission jack to lift the tank into its original position.
• Place the straps on their paint marks and install the bolts by hand to prevent cross-threading.
• Use the appropriate 13mm or 15mm socket and torque wrench to tighten each strap bolt. Torque to 47 Nm (35 ft-lbs).
• Use the plastic trim removal tool and your hands to reinstall the filler and vent hoses fully against their stops.
• Use the 10mm socket or long-nose pliers to secure the installed hose clamps in their original positions.

Step 15: Restore Power and Prime the System

• Use the 10mm socket to reconnect the negative battery terminal. Torque to 7 Nm (62 in-lbs).
• Add at least 19 liters (5 gallons) of fresh gasoline or approved E85-compatible fuel.
• Turn the ignition to ON without starting the engine for five seconds, then turn it OFF for ten seconds. Repeat this cycle three times.
• Do not crank the engine continuously if it does not start immediately. Repeat the priming cycle first.

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✅ After Repair

• 🔍 With the ignition on, inspect the tank, filler hoses, and line connections for leaks before starting the engine.
• 🚙 Start the engine and let it idle. A few extra seconds of cranking can be normal while the new module fills.
• 👃 Shut the engine off immediately if you see leaking fuel or smell a strong, persistent gasoline odor.
• 🛞 Use the 3-ton floor jack to lift your F-150, remove the jack stands, and lower it carefully.
• 🧪 Road-test at low speed, then recheck beneath the tank for leaks.
• 📊 The fuel gauge may take several minutes to settle after the tank has been refilled.
• ⚠️ If the engine still does not start, verify the fuel-pump fuse, electrical connector, line engagement, and fuel-pressure diagnosis before replacing more parts.

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💰 DIY vs Shop Cost

Shop Cost: ₹45,000-₹85,000 (parts + labor; imported US-market parts may increase cost)

DIY Cost: ₹18,000-₹45,000 (parts only)

You Save: ₹27,000-₹40,000 by doing it yourself!

Local labor and imported-part pricing vary significantly. This repair takes a shop approximately 3-5 hours.

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