Assumption: Your Patriot has the factory in-tank fuel pump module accessed under the rear seat (common on this model).

🔧 Patriot - Fuel Pump Replacement

The fuel pump is inside the fuel tank as a single module (pump + level sender). You’ll relieve fuel pressure, access the pump from inside the cabin, swap the module and seal, then prime the system and check for leaks.

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

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⚠️ Safety & Precautions

• 🧯 Work outside or in strong ventilation; fuel vapors are explosive.
• 🔥 No smoking, sparks, heat guns, or incandescent drop lights near the car.
• 🧤 Wear safety glasses and fuel-resistant gloves; fuel can irritate skin/eyes.
• 🔋 Disconnect the negative battery cable before opening the fuel system.
• ⛽ Keep a Class B fire extinguisher nearby.
• 🧽 Clean dirt around the pump before opening the tank to avoid contamination.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Class B fire extinguisher
• 10mm socket
• 13mm socket
• 3/8" drive ratchet
• 6" extension (3/8" drive)
• Torque wrench (10–100 Nm range)
• Trim removal tool
• Flathead screwdriver (medium)
• Needle-nose pliers
• Fuel line disconnect tool set (specialty)
• Brass drift punch (specialty)
• Small hammer
• Shop rags
• Vacuum cleaner
• Permanent marker

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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 (tank O-ring/gasket) - Qty: 1
• Fuel pump lock ring - Qty: 1

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📋 Before You Begin

• 🅿️ Park on level ground, set the parking brake, and open the driver window.
• ⛽ Ideally work with the tank below 1/2 full to reduce spills and weight.
• 🧼 Vacuum and wipe the rear seat area so dirt can’t fall into the tank.
• 🔌 Disconnect the negative battery cable using a 10mm socket. Prevents sparks near fuel.
• 🧯 Place the Class B fire extinguisher within reach.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve fuel system pressure

• Remove the fuel pump fuse/relay from the under-hood fuse box using needle-nose pliers.
• Start the engine and let it run until it stalls, then crank 2–3 seconds more. This bleeds most pressure out of the lines.
• Turn key OFF and reinstall the fuse/relay using needle-nose pliers.
• Keep rags ready for a small fuel drip.

Step 2: Remove the rear seat cushion (access area)

• Move the front seats forward for room.
• Release the rear seat cushion fasteners (varies by build):
• If bolted: use a 13mm socket and 3/8" ratchet to remove the front seat-cushion bolts, then lift the cushion out.
• If clipped: use a trim removal tool to pop the front edge upward, then lift the cushion out.

Step 3: Remove the fuel pump access cover

• Locate the round/oval access cover in the floor under the rear seat.
• Use a trim removal tool or flathead screwdriver (medium) to lift/remove the cover (and any butyl sealant).
• Use a vacuum cleaner and shop rags to clean all dirt around the pump module top.

Step 4: Disconnect electrical connector

• Press the connector tab and unplug the pump wiring using your fingers or a flathead screwdriver (medium) very gently.
• Don’t pull on the wires—pull on the connector.

Step 5: Disconnect fuel lines

• Wrap the connections with shop rags to catch fuel.
• Use the fuel line disconnect tool set (specialty) to release the quick-connect fittings, then pull the lines straight off.
• Use a permanent marker to mark which line goes where if there are multiple lines.

Step 6: Remove the fuel pump lock ring

• Mark the module orientation to the tank with a permanent marker so the new one goes back the same way.
• Use a brass drift punch (specialty) and small hammer to tap the lock ring counterclockwise until it releases.
• Brass helps reduce spark risk.

Step 7: Remove the fuel pump module

• Lift the module up slowly. Tilt it as needed to clear the float arm (fuel level sender) without bending it.
• Let fuel drain from the module into the tank for a few seconds.
• Remove the old seal (O-ring/gasket) from the tank opening using a flathead screwdriver (medium) carefully.

Step 8: Install the new seal and new fuel pump module

• Install the new tank seal into the groove by hand. Make sure it sits flat and isn’t twisted.
• Lower the new module into the tank, keeping the same orientation marks you made.
• Reinstall the lock ring and tighten it by tapping clockwise with the brass drift punch (specialty) and small hammer.
• Torque to 70 Nm (52 ft-lbs) if using an appropriate lock-ring tool and torque wrench. If tapping by punch, tighten firmly to the same stop position as original.

Step 9: Reconnect fuel lines and electrical

• Push the fuel lines on until they click. Lightly tug to confirm they’re locked.
• Reconnect the electrical connector until it clicks.

Step 10: Reinstall access cover and rear seat

• Reinstall the access cover using a trim removal tool as needed.
• Reinstall the rear seat cushion.
• If bolted: install bolts using a 13mm socket and 3/8" ratchet, then Torque to 45 Nm (33 ft-lbs).

Step 11: Reconnect battery

• Reconnect the negative battery cable using a 10mm socket.
• Torque to 6 Nm (53 in-lbs).

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✅ After Repair

• 🔑 Prime the system: turn key to ON for 3 seconds, OFF for 3 seconds. Repeat 3–4 times before starting.
• 🧯 Start the engine and idle for 1–2 minutes while checking for leaks at the pump top and fuel line connections.
• 🛠️ If the check engine light comes on, recheck the electrical connector and line clicks; a scan tool may be needed to clear codes after fixing the cause.
• 🚗 Road test 5–10 minutes, then recheck for any fuel smell or seepage.

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💰 DIY vs Shop Cost

Shop Cost: $700-$1,200 (parts + labor)

DIY Cost: $250-$550 (parts only)

You Save: $450-$650 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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