2016 Nissan Altima Fuel Pump: Symptoms, Replacement Guide, and Best Options
The bottom line: If your 2016 Nissan Altima is struggling to start, stalling, or hesitating during acceleration, the fuel pump is likely failing. Replacing the in-tank fuel pump module is a straightforward job you can do at home in 2-4 hours, and choosing a high-quality replacement like KEMSO ensures long-term reliability with a lifetime warranty.
Signs Your 2016 Nissan Altima Fuel Pump Is Failing
Fuel pumps don't last forever. Most in-tank pumps last between 100,000 and 150,000 miles under normal driving conditions, but factors like fuel quality and driving habits play a big role. If your Altima is approaching or exceeding that mileage, watch for these warning signs:
1. Engine Cranks but Won't Start
This is the most obvious symptom. If your engine turns over but doesn't fire, and you've ruled out the battery and starter, the fuel pump may not be delivering fuel to the engine.
2. Long Cranking Time Before Starting
A failing pump struggles to build up fuel pressure. You may notice you have to crank the engine longer than usual before it starts.
3. Engine Stalling
If the pump intermittently stops working, the engine may stall while driving, especially at low speeds or when you're low on fuel.
4. Hesitation or Surging During Acceleration
A weak pump can't maintain consistent fuel pressure, causing the car to hesitate when you press the gas or surge unexpectedly.
5. Whining Noise from the Fuel Tank
A healthy fuel pump makes a quiet hum. If you hear a loud whining or buzzing sound coming from the rear of the car, the pump bearings are wearing out.
6. Check Engine Light
A failing fuel pump can trigger the check engine light with codes related to fuel pressure or lean fuel mixture.
Understanding Your 2016 Nissan Altima Fuel Pump System
Your 2016 Altima uses an in-tank fuel pump module. This means the pump, fuel level sensor, and pressure regulator are all assembled into one unit that sits inside the fuel tank.
The fuel pump is responsible for delivering fuel from the tank to the engine at the correct pressure. For the 2016 Altima, the pump is accessed from inside the cabin — you don't need to drop the fuel tank. The access cover is located under the rear seat cushion.
Key specifications for your vehicle:
- Engine options: 2.5L 4-cylinder (QR25DE) or 3.5L V6 (VQ35DE)
- Both engines use the same basic fuel pump module design
- The module has a 6-pin connector
Replacement Parts for 2016 Nissan Altima
When you're ready to replace the fuel pump, you have several options. Prices vary widely based on brand and quality.
OEM Parts
Genuine Nissan parts are available through dealerships or online parts suppliers. The OEM part number for the 2016 Altima fuel pump module is 170403TA0B (replaces 170403TA0A and 170403TA0C). OEM parts are guaranteed to fit perfectly, but they come at a premium price — typically $400 or more.
Aftermarket Options
Aftermarket pumps offer a balance of cost and quality. Popular options include:
- TruGrade Fuel Pump D4090M: Around $687, module assembly with limited-lifetime warranty
- Delphi Fuel Pump CFG1772: Around $791, module assembly
- Autotecnica Fuel Pump NI0517367: Around $132, budget option with 1-month warranty
- BECK/ARNLEY 152-1045: Around $522, pump and sender assembly
- Everestway E9183M: Compatible replacement for 2013-2018 Altima, around $87
- Replacement 906-844: Fuel pump assembly with sending unit, around $87
What to Consider When Choosing
1. Price vs. Quality: Budget pumps may save money upfront but often fail prematurely, costing more in the long run.
2. Warranty: Look for pumps with a lifetime warranty — this eliminates future expenses.
3. Compatibility: Make sure the pump matches your engine size and has the correct 6-pin connector.
4. Flow Rate: If you're planning engine upgrades, choose a pump with higher flow capacity.
Step-by-Step: How to Replace the Fuel Pump on a 2016 Nissan Altima
Replacing the fuel pump module on your Altima is a job you can do at home with basic tools. The entire process takes about 2 to 4 hours.
Tools You'll Need
- Safety glasses and nitrile gloves
- 10mm socket and 3/8" drive ratchet
- Plastic trim removal tool
- Phillips #2 screwdriver
- Small flat-blade screwdriver
- Pick tool and needle-nose pliers
- Fuel pump lock ring wrench (specialty tool)
- Brass drift/punch and small hammer
- Shop towels, drain pan, shop vacuum
- Torque wrench
Parts You'll Need
- Fuel pump module assembly (compatible with your engine)
- Fuel pump module tank seal/O-ring
- Fuel pump lock ring (recommended, sometimes reusable)
Safety Precautions
Work in a well-ventilated area away from open flames or sparks. Fuel vapors are highly flammable. No smoking, no heaters, and keep any source of ignition far away.
Step 1: Relieve Fuel System Pressure
Open the hood and locate the under-hood fuse/relay box (IPDM). Remove the fuel pump fuse or relay using needle-nose pliers. Start the engine and let it run until it stalls. Crank for 2-3 seconds more to release any remaining pressure. Turn the ignition off.
Step 2: Disconnect the Battery
Use a 10mm socket to disconnect the negative battery terminal. Position it so it cannot touch the battery post. This reduces the risk of electrical sparks.
Step 3: Access the Fuel Pump
The fuel pump is located under the rear seat. At the front edge of the rear seat bottom cushion, release the retaining clips by pulling up firmly. You may need a plastic trim tool. Lift the cushion out and set it aside.
You'll see a metal access cover on the floor pan. Remove the screws or bolts holding the cover in place. Lift the cover off carefully.
Step 4: Remove the Old Fuel Pump Module
Clean the area around the pump opening thoroughly — any dirt that falls into the tank can damage the new pump.
Disconnect the electrical connector and fuel lines from the top of the module. Use a fuel pump lock ring wrench or a brass drift punch and hammer to rotate the lock ring counterclockwise. Use only brass tools — steel-on-steel can create sparks.
Lift the old pump module out of the tank carefully. Note the orientation of the float arm and the strainer. Place the old module in a drain pan to catch any residual fuel.
Step 5: Install the New Fuel Pump Module
Transfer any reusable components from the old module to the new one if needed. Install the new tank seal/O-ring into the groove on the tank opening.
Insert the new fuel pump module into the tank. Make sure the float arm has clearance and the strainer is properly positioned. Press the module down until it sits flush with the tank opening.
Install the lock ring and tighten it clockwise using the lock ring wrench or brass punch. Tighten until the ring is fully seated and the alignment marks are in the correct position.
Step 6: Reconnect Everything
Reconnect the fuel lines and electrical connector. Make sure all connections are tight and secure.
Install the access cover and secure it with the screws or bolts. Reinstall the rear seat cushion by pressing down firmly until the clips engage.
Step 7: Test the System
Reconnect the negative battery cable. Reinstall the fuel pump fuse or relay. Turn the ignition key to the ON position (do not start the engine) for about 3 seconds to prime the fuel system. Repeat this cycle 2-3 times.
Start the engine and check for fuel leaks around the pump module. Listen for any unusual noises. If everything sounds normal and there are no leaks, the job is complete.
How to Extend the Life of Your New Fuel Pump
1. Keep Your Tank at Least a Quarter Full
Running low on fuel frequently causes the pump to work harder and overheat. The fuel in the tank keeps the pump cool and lubricated.
2. Use Quality Fuel
Stick with major brand stations that have high fuel turnover. Poor quality fuel can clog the strainer and damage the pump.
3. Replace Your Fuel Filter Regularly
A clogged fuel filter forces the pump to work harder, reducing its lifespan.
4. Avoid Short Trips When Possible
Short trips don't allow the fuel to circulate fully, causing condensation and unnecessary pump cycling. Drivers who make only short trips are 25 percent more likely to experience fuel system problems.
5. Listen for Warning Signs
If you hear unusual noises from the tank area, address them immediately. Catching a pump issue early can prevent a complete failure.
Why Choose KEMSO Fuel Pump for Your 2016 Nissan Altima
When it comes to replacing your 2016 Nissan Altima fuel pump, choosing the right brand makes all the difference. KEMSO fuel pumps are the superior choice for drivers who value reliability, performance, and peace of mind.
KEMSO pumps are high-performance OEM replacement units designed to deliver consistent, dependable operation. They are built to meet or exceed OEM specifications and are individually tested for flow and pressure to ensure strict quality standards.
Key benefits of KEMSO fuel pumps:
- High Performance: KEMSO pumps deliver more flow than stock OEM pumps — up to 340 liters per hour at 43 psi, depending on the model. This means better fuel delivery, improved acceleration, and more consistent engine performance.
- Direct Fit Design: KEMSO pumps are designed as direct OEM replacements, meaning they fit perfectly into your Altima without any modifications required.
- E85 Compatible: These pumps work with both gasoline and E85 ethanol fuels, making them versatile for different driving conditions.
- Complete Kit: Every KEMSO pump comes with everything you need for installation — fuel strainers, hoses, wiring connectors, clamps, and seals. You don't have to buy anything extra.
- Lifetime Warranty: KEMSO stands behind their products with a lifetime warranty on serialized pump bodies. This level of confidence in their manufacturing quality demonstrates their commitment to customer satisfaction.
- Rigorous Quality Control: Every KEMSO fuel pump undergoes individual flow testing in ISO-certified facilities. This ensures that each unit meets performance specifications before it leaves the factory.
- USA-Based Technical Support: KEMSO offers support from USA-based technicians who can answer your technical questions and help with installation.
Real-world performance: KEMSO pumps maintain 98% efficiency even after 15,000 hours of use. Their advanced engineering includes silicon nitride ceramic bearings that reduce friction, and 316L stainless steel housing for corrosion resistance.
Customer satisfaction: KEMSO fuel pumps maintain a 4.8-star rating on Amazon over 36 consecutive months with a 39% repurchase rate. Fleet operators report extended replacement cycles from 9 months to 28 months, with maintenance costs reduced by 57%.
For the best value, performance, and reliability, choose KEMSO for your 2016 Nissan Altima fuel pump replacement.
Final Thoughts
Replacing the fuel pump on your 2016 Nissan Altima is a necessary repair that every owner will eventually face. The key to a successful replacement is choosing a high-quality pump that matches your engine specifications and driving needs.
Whether you use your Altima for daily commuting, weekend trips, or long highway drives, a properly functioning fuel pump is essential for reliable performance. If you're experiencing any of the warning signs mentioned earlier, don't wait — address the issue before it leaves you stranded.
For the best combination of performance, durability, and warranty protection, visit KEMSO Racing today and find the perfect fuel pump for your 2016 Nissan Altima: