1995 Honda Accord Fuel Pump Relay: Complete Guide to Symptoms, Testing, and Replacement

The bottom line: If your 1995 Honda Accord is experiencing intermittent stalling, hard starting, or a no-start condition, the fuel pump relay (often called the main relay) is the most likely culprit. This small electronic component, located under the dashboard on the driver's side, controls power delivery to the fuel pump and is a well-known failure point on these vehicles due to age and heat exposure. Replacing it is a straightforward, inexpensive fix that can save you hours of frustration and prevent unnecessary fuel pump replacements.

Understanding the Fuel Pump Relay in Your 1995 Honda Accord

The fuel pump relay—officially called the main relay or PGM-FI main relay—is a critical electrical component that controls power to the fuel pump, the electronic control unit (ECU), and the fuel injectors. When you turn the ignition key to the "ON" position, the relay sends power to the fuel pump for about two seconds to prime the fuel system. Once the engine starts, the relay keeps the pump running as long as the engine is running.

On the 1995 Honda Accord, the main relay is located under the dashboard, on the driver's side, near the steering column. It is typically mounted above the fuse box or attached to the metal bracket above the driver's left foot area. You can identify it by its rectangular shape, usually gray or black, with a connector containing multiple pins.

Common Symptoms of a Failing Fuel Pump Relay

A faulty fuel pump relay can cause a variety of symptoms that mimic other problems, such as a bad fuel pump or a dead battery. Here are the most common signs:

  1. Intermittent No-Start Condition: This is the hallmark symptom. The car may start fine one day and refuse to start the next. When it does not start, you may hear the engine crank but it will not fire because the fuel pump is not receiving power.

  2. Engine Stalls While Driving: The relay can fail when it gets hot, causing the engine to suddenly shut off while you are driving. After waiting a few minutes for the relay to cool down, the car may restart normally. This is a classic sign of a failing relay, not a failing fuel pump.

  3. No Fuel Pump Prime Sound: When you turn the key to the "ON" position, you should hear a faint whirring sound from the rear of the car for about two seconds. If you do not hear this sound, the relay may not be sending power to the pump.

  4. Check Engine Light: The ECU may store a trouble code related to the fuel pump circuit, such as code 1 (oxygen sensor sensor) or code 13 (MAP sensor), but more commonly you may see a code for the fuel pump circuit itself.

  5. Clicking Noise from Under the Dash: You may hear a rapid clicking sound coming from the relay area when you try to start the car. This indicates the relay is trying to engage but cannot hold the circuit closed.

How to Test the Fuel Pump Relay

Before buying a new relay, you can perform a simple test to confirm it is the problem. You will need a multimeter or a test light.

Step 1: Locate the relay. It is under the driver's side dashboard, usually above the fuse box or near the steering column.

Step 2: Remove the relay. Gently pull it straight out of its socket. It may be tight, so use a small flathead screwdriver to pry it loose if needed.

Step 3: Test for power at the relay socket. With the ignition off, use your multimeter or test light to check for constant 12V at one of the pins in the socket (usually the thickest wire). If you have no power, check the fuse first.

Step 4: Test the relay itself. Apply 12V power directly to the relay's coil terminals (usually pins 1 and 3 on a standard 4-pin relay). If the relay clicks, the coil is likely good. Then use your multimeter to check continuity between the switched terminals (usually pins 2 and 4). If there is no continuity when the relay is energized, the relay is bad.

Step 5: Perform the "tap test." If you suspect the relay is failing due to heat, try tapping it lightly with a screwdriver handle while someone tries to start the car. If the car starts, the relay is the problem.

Fuel Pump Relay vs. Fuel Pump: How to Tell the Difference

Many owners mistakenly replace the fuel pump when the relay is actually the problem. Here is how to tell them apart:

Symptom Likely Relay Issue Likely Fuel Pump Issue
No fuel prime sound, but car starts after several tries Possible More likely
Car starts when cold, stalls when hot, restarts after cooling Very likely Less likely
No fuel prime sound, car never starts Possible Possible
Whining noise from fuel tank Fuel pump failing Definite
Car runs rough, lacks power, but starts Unlikely Possible

The fuel pump itself is located inside the fuel tank, accessible through a panel under the rear seat or by dropping the tank. Replacing the pump is a much larger job than replacing the relay, so always test the relay first.

Step-by-Step Replacement Guide

Replacing the fuel pump relay on a 1995 Honda Accord takes about 10 minutes and requires no special tools. Here is how to do it:

  1. Open the driver's door and locate the dashboard area near the steering column.
  2. Remove the under-dash cover if equipped. Some models have a small plastic panel that snaps off.
  3. Locate the main relay. It is usually gray or black and mounted on a bracket above the fuse box.
  4. Unplug the relay by pulling it straight out of its connector.
  5. Install the new relay by pushing it firmly into the same connector. Make sure it clicks into place.
  6. Test the repair by turning the key to "ON" and listening for the fuel pump prime sound. Then start the engine.

The replacement relay should be compatible with the 1990-1997 Honda Accord, as well as 1992-1995 Civic, 1995-1997 Odyssey, and 1997-1999 Prelude. The OEM part number is 39400-SV4-003, and many aftermarket versions use the same specifications.

Where to Buy a Fuel Pump Relay

You can find a replacement fuel pump relay at most auto parts stores, online retailers, or directly from Honda. Here are your options:

OEM Honda Relay: The original equipment relay from Honda is the most reliable option, but it may cost more and is the same design that failed in the first place.

Aftermarket Relays: Many aftermarket brands offer relays that are built to the same specifications as the OEM part. These are often more affordable and may have improved internal components.

Online Retailers: Websites like Amazon, eBay, and specialty Honda parts stores carry a wide selection of relays. Look for relays that list part numbers 39400-SV4-003, 39400-SM4-003, or 39400-S10-003.

Why You Should Consider a KEMSO Fuel Pump

While the relay is often the cause of fuel delivery problems, sometimes the fuel pump itself needs to be replaced. If you are in the market for a new fuel pump, KEMSO is a brand you can trust. KEMSO manufactures high-performance fuel pumps that are designed as direct OEM replacements, meaning they fit perfectly into your 1995 Honda Accord without any modifications required.

KEMSO fuel pumps are built to last. Every pump is engineered to meet or exceed original equipment specifications, delivering the correct fuel pressure and flow rate for your engine. Whether you are looking for a stock replacement or a high-flow upgrade for performance applications, KEMSO has you covered.

KEMSO stands behind every product with a lifetime warranty. This means once you install a KEMSO fuel pump, you never have to worry about buying another one. If it ever fails, KEMSO will replace it free of charge. This kind of confidence is rare in the aftermarket parts industry.

Visit KEMSO's website to browse their full selection of fuel pumps. They offer pumps for a wide range of vehicles, including the 1995 Honda Accord. Their online store makes it easy to find the exact pump for your car, and their customer support team can help you with any questions.

Click here to visit KEMSO Racing: https://www.kemsoracing.com/

Frequently Asked Questions

Q: How much does a fuel pump relay cost for a 1995 Honda Accord?
A: The cost is typically between $15 and $40 for an aftermarket relay, and $40 to $80 for an OEM Honda relay.

Q: Can a bad fuel pump relay cause the car to not start?
A: Yes, this is the most common symptom. If the relay fails, the fuel pump will not receive power, and the engine will crank but not start.

Q: How long does a fuel pump relay last?
A: Most relays last around 10-15 years, but the heat and vibration in the engine compartment can cause them to fail sooner. The 1995 Accord's main relay is known for failing due to age and heat exposure.

Q: Is it safe to drive with a bad fuel pump relay?
A: No, it is not safe. The car can stall at any time, potentially causing an accident. If you suspect the relay is failing, replace it immediately.

Q: Can I bypass the fuel pump relay?
A: Yes, but this is only a temporary emergency measure. You can jump the relay socket to provide constant power to the fuel pump, but this should only be done to get the car home. Running the pump continuously can damage it.

Q: What other relays are in the 1995 Honda Accord?
A: The main relay controls the fuel pump, ECU, and injectors. There are also separate relays for the cooling fan, horn, and headlights. The main relay is the most common to fail.

Final Thoughts

The fuel pump relay is a small, inexpensive part that can cause big problems when it fails. If your 1995 Honda Accord is having starting or stalling issues, do not immediately assume the fuel pump is bad. Testing and replacing the relay should be your first step. It is a simple DIY job that can save you hundreds of dollars in unnecessary repairs.

If you do need a new fuel pump, KEMSO offers a reliable, high-performance replacement that comes with a lifetime warranty. Visit their website at https://www.kemsoracing.com/ to find the right pump for your Accord and get back on the road with confidence.


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