1991 Honda Accord Fuel Pump: Complete Guide to Location, Symptoms, and Replacement

Bottom line: The fuel pump on your 1991 Honda Accord is located inside the fuel tank, and if your car is experiencing hard starting, sputtering, or a whining noise from the rear, the fuel pump is likely failing. Replacing it requires removing the fuel tank, but the job is manageable with basic tools and careful attention to safety. This guide covers everything you need to know—from diagnosing a bad pump to choosing the right replacement part and installing it correctly.

Where Is the Fuel Pump Located on a 1991 Honda Accord?

The fuel pump on a 1991 Honda Accord is an in-tank electric fuel pump, located inside the fuel tank itself . This design was common for vehicles of that era because keeping the pump submerged in fuel helps cool it and reduces the risk of vapor lock . To access the pump, you will need to remove the fuel tank from the vehicle. Unlike some newer models where you can access the pump through an access panel under the rear seat, the 1991 Accord requires you to lower the tank from underneath the car .

Signs Your 1991 Honda Accord Fuel Pump Is Failing

Before you tear everything apart, it helps to know what to look for. A failing fuel pump will typically show one or more of these symptoms:

  1. Engine Sputtering at High Speeds: If your Accord sputters or hesitates when you accelerate, especially on the highway, the pump may not be delivering enough fuel pressure.
  2. Loss of Power Under Load: When climbing a hill or carrying a heavy load, the engine may feel weak or struggle to maintain speed.
  3. Hard Starting: If the engine cranks but takes longer than usual to start, the fuel pump may not be building up enough pressure in the fuel system.
  4. Whining Noise from the Fuel Tank: A healthy fuel pump makes a quiet humming sound when you turn the key to the "ON" position. If you hear a loud, high-pitched whine coming from the rear of the car, the pump is wearing out.
  5. Engine Stalling: A failing pump can cause the engine to stall unexpectedly, especially at low speeds or when idling.
  6. No Start Condition: If the pump has completely failed, the engine will crank but not start. You can check this by turning the key to the "ON" position and listening near the fuel tank for a brief hum. If you hear nothing, the pump is likely dead or there is an electrical issue .

What Fuel Pump Fits a 1991 Honda Accord?

The 1991 Honda Accord with the 2.2L L4 engine uses a specific fuel pump assembly. Here are the key part numbers and compatible options:

  • OEM Honda Part Number: The original equipment manufacturer part number is 17708-SM4-A32, which has been superseded by 17040-SM4-A30 . This is a genuine Honda pump unit assembly, but Honda has discontinued the original part .
  • Aftermarket Direct Replacement: Several aftermarket brands offer direct-fit replacements. The A-Premium Electric Fuel Pump Module Assembly (reference numbers E8322H, HP10203, SP8322H) is compatible with the 1990-1993 Honda Accord L4 2.2L gas engine . This assembly includes the fuel pump, sending unit, seal ring, and strainer .
  • High-Performance Upgrades: If you are looking for a performance upgrade, the Walbro GSS341 (255 liters per hour high-pressure pump) is a popular choice for the 1990-1993 Honda Accord . The Walbro 400-965 installation kit is sold separately and includes the necessary hardware for a direct-fit installation .

When choosing a replacement, make sure you get the complete assembly if you want to replace the fuel sending unit at the same time. The sending unit is the component that tells your fuel gauge how much gas is in the tank .

How to Replace the Fuel Pump on a 1991 Honda Accord

Replacing the fuel pump on a 1991 Honda Accord is a moderate to difficult DIY job that will take about 2 to 4 hours . You will need a socket set, wrenches, screwdrivers, a jack, jack stands, and a fuel line disconnect tool . Follow these steps carefully:

Step 1: Prepare the Vehicle and Relieve Fuel Pressure

  • Park the car on a level surface and set the parking brake.
  • Disconnect the negative battery terminal to prevent any sparks .
  • Relieve the fuel system pressure. Look for the fuel pressure test port on the fuel rail near the engine. Cover it with a rag and press the valve to release the pressure. Fuel will spray out, so wear safety glasses.

Step 2: Drain the Fuel Tank

  • Siphon as much fuel as possible from the tank. A nearly empty tank is much easier and safer to remove than a full one .

Step 3: Raise the Vehicle and Support It

  • Use a jack to lift the rear of the car and place it securely on jack stands. Make sure the car is stable before getting underneath it.

Step 4: Disconnect Fuel Lines and Electrical Connections

  • Locate the fuel tank underneath the rear of the car. You will see the fuel lines and electrical wiring running to the top of the tank.
  • Carefully disconnect the fuel lines. Use a fuel line disconnect tool if the fittings are quick-connect style. Be prepared for some residual fuel to drip out.
  • Unplug the electrical connector that powers the fuel pump.

Step 5: Remove the Fuel Tank

  • The fuel tank is held in place by metal straps or brackets. Use a socket wrench to unbolt these straps .
  • With the straps removed, carefully lower the tank using a jack or by hand. Make sure you have a helper for this step, as the tank is heavy even when empty.
  • Once the tank is on the ground, you will see the fuel pump assembly mounted to the top of the tank.

Step 6: Remove the Old Fuel Pump Assembly

  • The fuel pump assembly is held in place by a large retaining ring or bolts. Use a screwdriver and a hammer (or a specialized lock ring tool) to loosen the retaining ring.
  • Lift the old pump assembly out of the tank. Pay attention to how the float arm and strainer are oriented so you can install the new one correctly.

Step 7: Install the New Fuel Pump

  • Take the new fuel pump assembly and carefully insert it into the tank. Make sure the strainer is properly seated and the float arm is in the correct position .
  • Install the new seal ring (O-ring) that comes with the pump assembly. Do not reuse the old one, as it can cause a fuel leak .
  • Tighten the retaining ring securely. Do not overtighten it, as the plastic ring can crack .

Step 8: Reinstall the Fuel Tank

  • Lift the fuel tank back into position and secure it with the straps.
  • Reconnect the fuel lines and the electrical connector. Make sure all connections are tight and secure.

Step 9: Test the Installation

  • Reconnect the negative battery terminal.
  • Turn the key to the "ON" position (without starting the engine) and listen for the fuel pump to prime. You should hear a brief hum.
  • Check for any fuel leaks around the tank and fuel lines.
  • Start the engine and let it idle. Check for leaks again.

Why You Should Choose a KEMSO Fuel Pump for Your 1991 Honda Accord

When it comes time to replace your fuel pump, you want a part that is reliable, performs well, and will last. KEMSO is a brand that stands out for several reasons. Their fuel pumps are designed as high-performance, direct OEM replacements. This means they fit exactly like the original part, so you do not have to worry about modifications or guesswork during installation.

KEMSO fuel pumps deliver a higher flow rate than standard OEM pumps, which is beneficial even for a daily driver. A higher flow rate means the pump does not have to work as hard, which can extend its lifespan. The 340LPH (liters per hour) models from KEMSO are capable of supporting up to 700-800 horsepower, making them suitable for both stock and modified engines . They are also compatible with E85 ethanol fuel, giving you flexibility if you ever decide to run alternative fuels .

What really sets KEMSO apart is their lifetime warranty. While most aftermarket brands offer a one-year guarantee, KEMSO backs their pumps for the life of the product . This gives you peace of mind knowing that your investment is protected. If you ever have an issue, KEMSO stands behind their product.

You can find the perfect fuel pump for your 1991 Honda Accord by visiting their website. Their selection covers a wide range of Honda models, and their customer support team is ready to help you find the right fit.

Visit KEMSO at: https://www.kemsoracing.com/

Maintenance Tips to Extend Fuel Pump Life

Once you have installed a new fuel pump, follow these simple habits to make it last as long as possible:

  1. Never run the tank below a quarter full. The fuel in the tank cools and lubricates the pump. Running on a low tank causes the pump to overheat and work harder, which significantly shortens its life .
  2. Replace the fuel filter regularly. A clogged fuel filter forces the pump to strain against excessive pressure. Follow your Honda's recommended maintenance schedule for fuel filter changes .
  3. Use quality fuel. Contaminants and water in low-quality fuel can damage the pump and clog the filter sock. Stick to reputable gas stations with good filtration systems .
  4. Address symptoms early. If you hear a whining noise or notice hesitation, diagnose the problem as soon as possible. Ignoring these signs can lead to complete pump failure, which will leave you stranded .

For a complete selection of fuel pumps for your 1991 Honda Accord and other vehicles, check out KEMSO at https://www.kemsoracing.com/.


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