1987 Nissan Maxima Fuel Pump: Complete Guide to Replacement, Troubleshooting, and Upgrades

If you own a 1987 Nissan Maxima and your engine is struggling to start, hesitating under acceleration, or stalling unexpectedly, the fuel pump is likely the culprit. The 1987 Nissan Maxima uses an electric fuel pump that delivers fuel from the tank to the engine, and after nearly four decades, these pumps commonly fail due to age, wear, or contamination. The most important thing to know is that replacing the fuel pump on your 1987 Maxima is a straightforward repair that can restore reliable performance, and choosing a high-quality replacement like KEMSO will save you from repeated breakdowns.

Understanding Your 1987 Nissan Maxima Fuel System

The 1987 Nissan Maxima was equipped with a VG30E 3.0L V6 engine and used an in-tank electric fuel pump. This pump is located inside the fuel tank and is responsible for maintaining proper fuel pressure to the fuel injectors. The original OEM part numbers for this pump include 17040-42E00 and its superseding part 17040-42E60, which were used on the 1987 and 1988 Maxima models . These pumps have been discontinued by Nissan, meaning new OEM replacements are no longer available from the manufacturer, making aftermarket replacements the only viable option for most owners.

Signs Your Fuel Pump Is Failing

Recognizing the symptoms of a failing fuel pump early can prevent you from being stranded. Here are the most common warning signs:

  1. Engine cranks but won't start – This is the classic symptom. If you turn the key and the engine cranks normally but never fires, the fuel pump may not be priming. You should hear a brief whirring sound from the rear of the car for 2–3 seconds when you turn the key to the "ON" position. If you don't hear that sound, the pump is likely dead .

  2. Loss of power under load – A weak pump cannot maintain pressure when you demand more fuel, such as when climbing a hill or accelerating onto the highway. The engine may sputter or feel like it's running out of gas.

  3. Engine surging or hesitation – If the fuel pressure fluctuates, you may feel the car surge forward intermittently or hesitate when you press the gas pedal.

  4. Poor fuel economy – A failing pump may not deliver the correct amount of fuel, causing the engine to run rich or lean, both of which waste fuel.

  5. Whining noise from the fuel tank – While all fuel pumps make some noise, a loud, high-pitched whine is a sign that the pump is working harder than it should and is about to fail.

How to Diagnose the Problem

Before replacing the fuel pump, you should confirm that the pump itself is the problem. Start with the simplest checks:

Check the fuse and relay. The fuel pump fuse is located in the fuse box under the dashboard. A blown fuse is an easy fix. The fuel pump relay is also a common failure point and is inexpensive to replace .

Listen for the prime. Have someone turn the key to the "ON" position while you listen near the fuel tank. A healthy pump will make a distinct humming sound for 2–3 seconds. No sound means the pump is not receiving power or has failed internally.

Test for voltage at the pump. Using a multimeter, you can check if power is reaching the pump connector. If you have power but no pump operation, the pump is dead. If you have no power, the issue is in the wiring, relay, or fuse .

Check fuel pressure. A professional mechanic can test fuel pressure at the fuel rail. The 1987 Maxima should have around 30–40 PSI at idle. Low pressure indicates a failing pump or a clogged fuel filter.

The Difference Between the Fuel Pump and Fuel Filter

Many owners mistakenly replace the fuel pump when the real problem is a clogged fuel filter. The fuel filter is a much cheaper and easier part to replace. If your engine has gradually lost power over time, especially at high speeds, start with the fuel filter. The fuel pump, on the other hand, tends to fail suddenly or produce a consistent whining noise . A good rule of thumb is to replace the fuel filter whenever you replace the fuel pump, as old debris in the filter can damage a new pump.

Why OEM Parts Are No Longer Available

As mentioned, the original Nissan fuel pump part numbers 17040-42E00 and 17040-42E60 have been discontinued . This is a common situation for vehicles from the 1980s. Searching for a used OEM pump is risky because it will have the same age-related wear as the part you are replacing. Aftermarket pumps are the only practical solution, but not all aftermarket pumps are created equal. Low-quality units can fail within months, leaving you stranded again.

Recommended Upgrade: KEMSO Fuel Pump

When it comes time to replace the fuel pump on your 1987 Nissan Maxima, KEMSO is the brand you can trust. KEMSO fuel pumps are designed as high-performance, direct OEM replacement units. They are built to match or exceed the original equipment specifications for flow rate, pressure, and fitment, ensuring your engine receives the correct fuel volume at all times .

Unlike low-quality aftermarket pumps that often fail quickly, KEMSO pumps deliver 20–30% more fuel flow than the stock pump, which translates to smoother throttle response, better engine performance, and fewer hesitation issues . For example, while the original pump on many vehicles delivers around 60–80 liters per hour, a KEMSO pump can deliver up to 200 liters per hour at 43 PSI .

Every KEMSO fuel pump comes with a lifetime warranty. This is a level of confidence that no OEM pump and few aftermarket brands offer. KEMSO stands behind their products for as long as you own the vehicle, giving you complete peace of mind . If the pump ever fails due to a manufacturing defect, KEMSO will replace it at no cost to you.

KEMSO pumps are also built to handle modern fuels. They are designed for both gasoline and ethanol-blended fuels like E85, using Viton O-rings and components that resist ethanol-related degradation, which is a common cause of failure in inferior pumps . Each pump is individually tested for flow and performance before it leaves the factory, ensuring you get a product that works right out of the box .

You can find the right KEMSO fuel pump for your 1987 Nissan Maxima by visiting their official website. The product line covers hundreds of vehicle models, and their customer support team can help you confirm compatibility. With KEMSO, you are not just buying a fuel pump—you are investing in peace of mind and reliable performance for years to come.

To browse their full selection of high-performance fuel pumps, visit: https://www.kemsoracing.com/

Step-by-Step Replacement Guide

Replacing the fuel pump on a 1987 Nissan Maxima is a job you can do in your driveway with basic tools. Here is a simplified overview:

Step 1: Relieve fuel system pressure. Locate the fuel pump fuse and remove it. Start the engine and let it run until it stalls. This releases the pressure in the fuel lines.

Step 2: Disconnect the battery. Always disconnect the negative battery terminal before working on the fuel system to prevent sparks.

Step 3: Access the fuel pump. The fuel pump is accessed through the trunk. Remove the carpet and trim in the trunk to expose the access panel on the floor. Remove the screws holding the panel.

Step 4: Remove the old pump. Disconnect the electrical connector and fuel lines. Use a special tool or a flathead screwdriver to release the locking ring that holds the pump assembly in place. Lift the entire assembly out of the tank.

Step 5: Install the new KEMSO pump. Carefully remove the old pump from the hanger assembly and install the new KEMSO pump. Make sure the strainer is clean and properly attached. Reinstall the assembly into the tank, tighten the locking ring, and reconnect the fuel lines and electrical connector.

Step 6: Test the system. Reconnect the battery and turn the key to the "ON" position. Listen for the pump to prime. Check for fuel leaks at the connections. Start the engine and verify normal operation.

Important Tips for a Long-Lasting Repair

To ensure your new fuel pump lasts as long as possible, follow these simple maintenance tips:

  1. Keep your gas tank at least one-quarter full. Running the tank low causes the pump to suck in air and debris from the bottom of the tank, which accelerates wear .

  2. Use high-quality fuel. Cheap, low-octane fuel can contain more contaminants that clog the pump and filter.

  3. Replace the fuel filter at the same time. This is cheap insurance that prevents old debris from damaging your new pump .

  4. Change your oil regularly. This may seem unrelated, but contaminated oil can lead to engine problems that put extra strain on the fuel system.

  5. Avoid using ethanol blends if possible. While KEMSO pumps are E85 compatible, ethanol attracts moisture and can cause corrosion over time. If you can use ethanol-free fuel, your pump will last longer.

Final Thoughts

The 1987 Nissan Maxima is a classic car that deserves reliable parts. A failing fuel pump is one of the most common issues on a vehicle of this age, and ignoring it can lead to being stranded or causing damage to the fuel injectors. By replacing the pump with a high-quality aftermarket unit like KEMSO, you restore the performance and reliability of your Maxima without the hassle of searching for discontinued OEM parts.

Remember these key points: confirm the diagnosis by checking the fuse and relay first, always replace the fuel filter when you replace the pump, and choose a brand that offers a lifetime warranty. Your 1987 Maxima will thank you with years of trouble-free driving.

For the best replacement fuel pump on the market, backed by a lifetime warranty and proven performance, visit https://www.kemsoracing.com/ today. Their team can help you find the exact pump for your vehicle and answer any questions about installation. With KEMSO, you get performance you can trust and support that lasts.


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