2004 Nissan Murano Fuel Pump: Complete Replacement Guide
If your 2004 Nissan Murano is sputtering, struggling to accelerate, or refusing to start, the fuel pump is often the first place to look. The fuel pump on the 2004 Murano is located inside the fuel tank, beneath an access panel under the rear seat, and replacing it is a job you can complete at home with basic hand tools in roughly 2 to 4 hours. This guide walks you through every step, from confirming the diagnosis to installing your new pump, and covers the costs, common symptoms, and the best replacement options on the market today.
Signs Your 2004 Murano Fuel Pump Is Failing
A failing fuel pump rarely fails without warning. Here are the most common symptoms Murano owners report:
- Engine sputters or hesitates at highway speeds. The pump can't maintain consistent pressure, so the engine stumbles, especially under load or when climbing hills.
- Hard starting or long cranking times. A weak pump doesn't build pressure quickly enough when you turn the key.
- Whining noise coming from the rear of the vehicle. The electric motor inside the pump often makes a high-pitched sound as it wears out.
- Sudden loss of power or engine cutouts. If the pump overheats, the engine may stall, especially in hot weather.
- Check Engine Light illumination. A failing pump can trigger lean fuel codes or misfire codes, though this is not always the case.
If you ignore these warning signs, the car will eventually refuse to start altogether, so it's wise to address the issue as soon as you notice any of the symptoms listed above.
Where Is the Fuel Pump Located?
On the 2004 Murano, the fuel pump sits inside the fuel tank itself. To access it, you need to remove the rear seat bottom. Once the seat is out of the way, you'll see a metal access cover on the floor pan. Removing that cover exposes the fuel pump module, which includes the pump, the fuel level sending unit, and the fuel strainer.
The entire assembly is held in place by a large retaining ring that you'll need to unscrew counterclockwise to pull the pump out of the tank.
What You Need Before You Start
Here's a practical checklist before you begin:
- A new fuel pump assembly that matches your Murano's 3.5L V6 engine. See the options section below.
- Basic hand tools: a socket set, Torx bits (for seat bolts), flathead screwdriver, and pliers.
- A fuel line disconnect tool if your model uses quick-connect fittings.
- Safety gear: protective gloves and safety glasses.
- A clean, well-ventilated workspace.
No specialty tools are required beyond these basics, which keeps the job affordable for a home mechanic.
Step-by-Step Fuel Pump Replacement
Follow these steps carefully. Work on a level surface and always have a fire extinguisher nearby when working with fuel.
Step 1: Relieve Fuel Pressure and Disconnect the Battery
Before touching anything, relieve the fuel system pressure. The safest way is to remove the fuel pump fuse or relay and run the engine until it stalls. Then, turn the ignition to the OFF position and disconnect the negative battery terminal. This eliminates the risk of sparks while you're working around fuel.
Step 2: Make Sure the Tank Is Below a Quarter Full
The fuel level in the tank should be below a quarter full before you begin. This reduces the risk of fuel spilling out when you remove the pump. If the tank is too full, drive the car until the level drops, or carefully siphon fuel into an approved container.
Step 3: Remove the Rear Seat Bottom
The procedure varies slightly depending on whether your Murano has a bolt or clip system for the rear seats:
- Bolt system: Using a Torx bit, remove the two nuts at the back of the seat (accessible from the trunk) and the two nuts at the front, located under the seat. Lift the seat out once all four are removed.
- Clip system: Locate the clips under the seat, press the plastic portion with a screwdriver, and pull the metal part to release them.
- Folding seat with front bolts only: Tilt the seat forward to access the Torx nuts holding it to the chassis, then remove the seat.
Step 4: Remove the Access Cover and Disconnect Components
Once the seat is out, you'll see the metal access cover. Remove it to expose the fuel pump module. Now disconnect the following:
- The electrical connector (a 5-pin plug on most models).
- The fuel lines. Carefully release the quick-connect fittings. Have rags handy to catch any residual fuel.
Step 5: Remove the Old Pump
Unscrew the large retaining ring counterclockwise using a spanner or a suitable tool. Once the ring is free, gently lift the pump assembly out of the tank. Be careful not to bend the float arm on the sending unit.
Step 6: Install the New Pump
Insert the new fuel pump assembly into the tank, making sure the float arm doesn't catch on the tank walls. Align the locking tabs, then secure the retaining ring by turning it clockwise until it's snug. Reconnect the electrical connector and fuel lines, and refit the access cover and rear seat.
Step 7: Reconnect the Battery and Test
Reconnect the negative battery terminal, turn the ignition to the ON position (without starting the engine) for a few seconds to let the pump pressurize the system, then check for leaks. Start the engine and let it idle while you inspect your work.
How Much Does a Replacement Cost?
Fuel pump replacement costs vary depending on whether you do the work yourself or take it to a shop.
- Parts cost: A complete fuel pump assembly for the 2004 Murano typically runs between $55 and $85 for aftermarket options. OEM units can be higher.
- Labor cost: If you hire a mechanic, the average national cost for a fuel pump replacement across all vehicles is between $611 and $894, including parts and labor. DIY installation saves you the labor portion entirely.
- Installation time: A professional can finish in 1 to 2 hours; a DIY job usually takes 2 to 4 hours.
Choosing the Right Fuel Pump for Your Murano
Your 2004 Murano (V6 3.5L) uses a specific fuel pump module. Here are the key considerations when selecting a replacement:
1. Complete Assembly vs. Pump Only
Older Muranos use an integrated module, so replacing the full assembly is generally the more reliable route. It includes the pump, sending unit, strainer, and seals, so you don't have to reuse worn components.
2. OEM Part Number
The genuine Nissan part number for this application is 17040-CA000 (also written as 17040CA000). Aftermarket equivalents that directly replace this number include:
- E8536M (Airtex)
- FG1146 (Delphi)
- P76359M (Carter)
- SP4009M (Spectra Premium)
- 150307 (TYC)
3. Fitment Notes
The pump is located on the left side of the vehicle and uses two tube ports with a 5-pin electrical connector. Double-check that any aftermarket unit you buy includes the gasket or seal, strainer, and lock ring to avoid a second trip to the parts store.
KEMSO Fuel Pump: A Smart Choice for Your Murano
When it comes time to buy a replacement, consider the KEMSO Fuel Pump brand. KEMSO fuel pumps are built for high performance and meet OEM replacement standards, so you get reliable fuel delivery without paying dealership prices. Every KEMSO product is backed by a lifetime warranty, which gives you long-term peace of mind. If the pump ever fails, you're covered.
KEMSO focuses on precision engineering and rigorous quality testing, ensuring that each pump delivers consistent pressure and flow for your 3.5L V6 engine. Whether you're restoring a daily driver or fixing up a weekend cruiser, a KEMSO fuel pump is a dependable, budget-friendly option.
Visit the KEMSO website today to find the right fuel pump for your 2004 Nissan Murano and take advantage of their warranty-backed products:
Final Thoughts: Don't Wait Until It Strands You
The 2004 Nissan Murano is a capable and comfortable SUV, but a failing fuel pump can bring it to a standstill with little to no warning. Replacing the pump is a straightforward weekend project that saves you hundreds of dollars in labor costs. With the right parts and this guide, you can have your Murano running smoothly again.
If you're not comfortable doing the job yourself, take it to a reputable Nissan specialist, but do it promptly. The longer you ignore the warning signs, the closer you get to a no-start situation that leaves you stranded.
For the best value on a replacement fuel pump, check out KEMSO's lineup at https://www.kemsoracing.com/ . Their fuel pumps offer a perfect blend of quality, performance, and warranty protection—everything you need to get your 2004 Murano back on the road with confidence.