🔧 Murano - Fuel Pump Replacement

On your Murano, the fuel pump is part of an in-tank “fuel pump module” that sits under an access cover beneath the rear seat. The job is mostly careful disassembly, keeping dirt out of the tank, and re-sealing everything so you don’t get fuel odors or leaks.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

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⚠️ Safety & Precautions

• 🔥 Work outside or in a very well-ventilated area; fuel vapors ignite easily.
• 🧯 Keep a class B fire extinguisher nearby; no smoking, no heat guns, no trouble lights with hot bulbs.
• ⚡ Disconnect the 12V battery negative cable before opening the tank access.
• 🧼 Clean the area before opening the tank; dirt in the tank can damage the new pump.
• ⛔ Do not use power tools near an open fuel tank.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Fire extinguisher (Class B)
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• 10mm socket
• Ratchet
• 3/8" torque wrench
• Trim clip removal tool
• Flat-blade screwdriver (small)
• Needle-nose pliers
• Fuel line quick-disconnect tool set (specialty)
• Fuel pump lock ring wrench (specialty)
• Shop towels
• Non-sparking plastic scraper
• Handheld vacuum
• Flashlight (LED)

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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 tank seal/O-ring - Qty: 1
• Access cover butyl sealer strip (if damaged) - Qty: 1
• Fuel line O-rings (if applicable) - Qty: 1

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📋 Before You Begin

• Park your Murano on level ground and set the parking brake.
• Lower the fuel level if possible (under 1/2 tank makes it less messy).
• Relieve fuel pressure: remove the fuel pump fuse/relay (use the fuse box cover legend), start the engine, and let it run until it stalls. Crank 2-3 seconds more, then turn ignition OFF.
• Disconnect the 12V battery negative cable using a 10mm socket.
• Vacuum dirt around the rear seat area and access cover before opening anything.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the rear seat cushion

• Use a trim clip removal tool to release the front seat-cushion clips, then lift the cushion up and out.
• Set the cushion aside where it won’t get fuel odor on it.

Step 2: Open the fuel pump access cover

• Locate the round/oval access cover in the floor under the rear seat.
• Use a flat-blade screwdriver (small) and non-sparking plastic scraper to lift the cover without bending it.
• Peel back the butyl sealer carefully; you’ll reuse it if it’s still sticky and intact.

Step 3: Disconnect wiring and fuel lines

• Unplug the fuel pump electrical connector by releasing the tab with a flat-blade screwdriver (small).
• Place shop towels around the line connection to catch any fuel.
• Disconnect the fuel line using a fuel line quick-disconnect tool set (specialty) if needed.
• Pull straight—twisting can damage the fitting.

Step 4: Clean the top of the module

• Use a handheld vacuum and shop towels to remove all dirt from the top of the tank/module.
• This is critical—anything that falls in can ruin the new pump.

Step 5: Remove the lock ring

• Use a fuel pump lock ring wrench (specialty) to loosen and remove the lock ring (this is a spanner that grabs the ring without creating sparks).
• If there are alignment marks on the ring/tank, note them for reassembly.

Step 6: Remove the fuel pump module

• Lift the module straight up slowly; angle it as needed to clear the fuel level sender float.
• Let fuel drain from the module into the tank; keep shop towels handy.
• Remove the old tank seal/O-ring from the tank opening.

Step 7: Install the new seal and module

• Install the new seal/O-ring in the tank opening. Make sure it sits flat and isn’t twisted.
• Lower the new module into the tank, guiding the float arm carefully so it doesn’t bend.
• Align the module’s locating tabs/marks with the tank openings/marks.

Step 8: Reinstall the lock ring

• Thread the lock ring on by hand first to avoid cross-threading.
• Tighten using the fuel pump lock ring wrench (specialty) until the ring is fully seated and alignment marks (if present) line up.
• If your replacement includes fasteners instead of a ring, tighten evenly and use a 3/8" torque wrench to Torque to factory specification.

Step 9: Reconnect fuel line and electrical connector

• Reconnect the fuel line until it clicks/locks; gently tug to confirm it’s secure.
• Plug in the electrical connector until it clicks.

Step 10: Seal the access cover and reinstall the rear seat

• Reinstall the access cover using the original butyl sealer, or replace it with access cover butyl sealer strip if the original won’t stick.
• Reinstall the rear seat cushion by lining up the clips and pressing down firmly.

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✅ After Repair

• Reconnect the battery negative cable using a 10mm socket and Torque to factory specification.
• Prime the system: turn ignition ON (engine off) for 5 seconds, OFF for 5 seconds; repeat 3-4 times.
• Start the engine and let it idle. Check carefully for leaks at the fuel line connection and around the module seal.
• If you have a check engine light, scan and clear codes after confirming there are no leaks.
• Drive a short loop, then recheck for fuel smell inside the cabin (usually means the access cover seal isn’t sealed well).

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💰 DIY vs Shop Cost

Shop Cost: $900-$1,500 (parts + labor)

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

You Save: $650-$850 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-4 hours.

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🎯 Ready to get started?

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