🔧 Murano - Fuel Pump Replacement

Your Murano’s fuel pump lives inside the fuel tank as part of a pump module. Replacing it is mostly about working safely around gasoline, relieving fuel pressure, and swapping the module without damaging the seal.

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

Assumption: Your Murano has an in-cabin access cover under the rear seat.

---

⚠️ Safety & Precautions

• ⚠️ Work outside or in a well-ventilated area; fuel vapors are flammable.
• ⚠️ No smoking, sparks, heat guns, or trouble lights with hot bulbs.
• ⚠️ Disconnect the negative battery cable to prevent accidental sparks.
• ⚠️ Relieve fuel pressure before disconnecting any fuel lines.
• ⚠️ Keep a Class B fire extinguisher nearby and wear safety glasses and gloves.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Class B fire extinguisher
• 10mm socket
• 3/8" drive ratchet
• 3" extension (3/8")
• Phillips screwdriver #2
• Flat-blade screwdriver (medium)
• Plastic trim removal tool
• Fuel line disconnect tool set (specialty)
• Brass punch (specialty)
• Small hammer
• Torque wrench (5-25 Nm range)
• Shop towels
• Catch pan (drain pan)
• Handheld vacuum
• Permanent marker

---

🔩 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 pump lock ring - Qty: 1

---

📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Open the fuel door and loosen the gas cap to help release tank vapor pressure.
• Relieve fuel pressure: remove the fuel pump fuse/relay, then crank the engine for 5-10 seconds a couple times until it won’t start.
• Disconnect the battery: use a 10mm socket to remove the negative battery cable and isolate it so it can’t spring back.
• Vacuum dirt from the rear seat area so debris can’t fall into the tank.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the rear seat cushion

• Use a plastic trim removal tool to pop the front seat-cushion clips up (push the tool under the front edge and pry upward).
• Lift the cushion out and set it aside.

Step 2: Open the fuel pump access cover

• Locate the access cover in the floor under the rear seat area.
• Remove fasteners using a Phillips screwdriver #2 or 10mm socket (varies by cover style).
• Lift the cover and set it aside.

Step 3: Clean the area (critical)

• Use a handheld vacuum to remove loose dust around the pump flange (the round top plate).
• Wipe the area with shop towels. Clean first, so dirt won’t enter the tank.

Step 4: Disconnect the electrical connector and fuel lines

• Unplug the pump electrical connector using a flat-blade screwdriver (medium) to gently lift the lock tab if needed.
• Place a catch pan (drain pan) and shop towels under the lines to catch fuel.
• Disconnect the quick-connect fuel line(s) using a fuel line disconnect tool set (specialty).
• If a line won’t release, re-check fuel pressure relief and make sure you’re using the correct size tool.

Step 5: Mark orientation

• Use a permanent marker to mark the pump module position relative to the tank (helps reinstall the same way).

Step 6: Remove the lock ring

• Use a brass punch (specialty) and small hammer to tap the lock ring counterclockwise until it unlocks.
• Lift the lock ring off. Brass reduces spark risk versus steel.

Step 7: Remove the fuel pump module

• Carefully lift the module up. Tilt it slightly to clear the float arm (the fuel level sensor arm).
• Let fuel drain from the module into the tank for a few seconds, then move it over the catch pan (drain pan).
• Remove and discard the old seal O-ring from the tank opening.

Step 8: Install the new seal and module

• Install the new fuel pump module seal O-ring into the tank groove (make sure it’s not twisted).
• Lower the new pump module into the tank, guiding the float arm in without bending it.
• Align your marker lines so the module sits in the same orientation.

Step 9: Reinstall the lock ring

• Install the lock ring and tap it clockwise with the brass punch (specialty) and small hammer until fully seated/locked.
• If your lock ring design uses small bolts instead (some variants do), install them using a 10mm socket and torque wrench (5-25 Nm range), Torque to 7 Nm (62 in-lbs).

Step 10: Reconnect lines, connector, and close the access cover

• Reconnect fuel line(s) by pushing on until you feel/hear a click; gently tug to confirm locked.
• Reconnect the electrical connector until it clicks.
• Reinstall the access cover using a Phillips screwdriver #2 or 10mm socket.

Step 11: Reinstall the rear seat cushion

• Position the cushion and press down firmly at the front edge to snap the clips back in.

Step 12: Restore power and prime the system

• Reconnect the battery negative cable using a 10mm socket.
• Reinstall the fuel pump fuse/relay (if removed).
• Prime the pump: turn ignition to ON (engine off) for 5 seconds, then OFF for 5 seconds; repeat 3 times.

---

✅ After Repair

• Start the engine and let it idle for 1-2 minutes.
• Check carefully for fuel leaks at the pump top and fuel line connections.
• If the fuel gauge reads wrong, recheck the module orientation and float arm movement.
• Road test for 10 minutes, then recheck for any fuel smell or dampness under the rear seat access area.

---

💰 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.

---

🎯 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.