1990 Honda Accord Fuel Pump Fuse Location: A Complete Troubleshooting Guide

If your 1990 Honda Accord cranks but won't start, and you suspect the fuel pump isn't getting power, the fuel pump fuse is one of the first things to check. For the 1990 Honda Accord, the fuel pump is not controlled by a dedicated fuse labeled "fuel pump" — instead, the fuel pump receives power through the PGM-FI Main Relay, which is protected by a 15-amp fuse located in the passenger compartment fuse box, specifically fuse position #3 (or #2 depending on the specific model variation). The passenger compartment fuse box is located under the dashboard behind the left kick panel . This 15-amp fuse also protects several other critical components, including the fuel pump relay, the emission control solenoid valves, the voltage regulator, the cooling fan timer unit, and the automatic transmission control unit .

Understanding the Fuel Pump Power System on the 1990 Honda Accord

Before you start replacing fuses, it helps to understand how the fuel pump gets power. Unlike some vehicles that have a dedicated fuse for the fuel pump, the 1990 Honda Accord uses a system where the PGM-FI Main Relay controls the power supply to the fuel pump . The main relay is a combination of two relays in one unit — one relay powers the engine control unit (ECU), and the other relay powers the fuel pump and the fuel injectors. This relay is activated when you turn the ignition key to the ON position, and it should power the fuel pump for about 2 seconds to prime the fuel system .

The 15-amp fuse that protects the PGM-FI Main Relay is located in the passenger compartment fuse box. If this fuse is blown, the main relay won't receive power, and the fuel pump won't run. This is why many "no-start" issues on the 1990 Accord trace back to either a blown fuse or a failed main relay.

Step-by-Step: Locating the Fuse Box

The passenger compartment fuse box on the 1990 Honda Accord is located under the dashboard, behind the left kick panel (the plastic panel near the driver's left foot) . To access it:

  1. Open the driver's door and look at the area to the left of the steering column, near where your left foot rests.
  2. Remove the plastic kick panel cover. It may be held in place by a few clips or screws. Gently pull the panel away from the dashboard.
  3. Behind the panel, you will see the fuse box. The cover of the fuse box has a diagram printed on it that lists the circuits protected by each fuse .

The under-hood fuse box is located next to the battery . However, the fuse you need to check for the fuel pump is in the passenger compartment.

Identifying the Correct Fuse

Once you have the passenger compartment fuse box open, look for the fuse that is labeled #3 in the diagram. Here is what you need to know:

Fuse #3 (15 Amp): This fuse protects the PGM-FI Main Relay, the fuel pump, the emission control solenoid valves, the voltage regulator, the cooling fan timer unit, the automatic transmission control unit, the charge warning light, the electrical load detector (ELD) unit, the intake air control solenoid valve, the engine mount control unit, and the engine mount control solenoid valve .

Important Note: Some diagrams and sources list the passenger compartment fuse positions differently. Fuse #2 is also 15 amps in some listings and may cover similar circuits . The safest approach is to check the diagram on the fuse box cover. The fuse you are looking for is a 15-amp fuse, usually colored blue.

How to Check the Fuse

Checking a fuse is a straightforward process. Follow these steps:

  1. Turn off the ignition and remove the key from the ignition switch.
  2. Locate fuse #3 (or the 15-amp fuse labeled for the PGM-FI system) in the passenger compartment fuse box.
  3. Pull the fuse out using a fuse puller tool. Many fuse boxes come with a small plastic puller clipped inside the fuse box cover. If you don't have one, you can use a pair of needle-nose pliers, but be careful not to damage the fuse.
  4. Inspect the fuse. Hold it up to the light. Look through the transparent plastic casing at the metal strip inside. If the metal strip is broken or if you see a burn mark, the fuse is blown .
  5. Test the fuse with a multimeter for a more reliable check. Set the multimeter to measure continuity (or resistance). Touch the probes to the two metal prongs on the top of the fuse. If you hear a beep (or see a reading of near zero ohms), the fuse is good. If there is no continuity, the fuse is blown .

If the fuse is blown, replace it with a 15-amp fuse of the same type. Never use a higher amperage fuse, as this can cause electrical damage or a fire.

What If the Fuse Is Good but the Fuel Pump Still Doesn't Work?

If the fuse is good, the problem is likely elsewhere. The most common culprits on the 1990 Honda Accord are:

  1. The PGM-FI Main Relay: This is a very common failure point on Accords of this era. The relay is located behind the driver's side kick panel, near the fuse box, or sometimes behind the glove box. If the relay is faulty, the fuel pump will not receive power even with a good fuse . Symptoms of a bad main relay include the engine cranking but not starting, and no sound of the fuel pump priming when you turn the key to the ON position . You can test the relay by applying power and ground to the correct terminals, or you can simply swap it with a known good one.

  2. The Fuel Pump Itself: The fuel pump is located inside the fuel tank. To access it, you can either remove the rear seat cushion (there is an access panel under the carpet on the passenger side) or drop the fuel tank . If the pump itself is faulty, it will not run even if it receives power.

  3. Wiring Issues: Damaged or corroded wiring between the relay and the fuel pump, or a bad ground connection, can prevent the pump from operating.

Symptoms of a Blown Fuel Pump Fuse

If the 15-amp fuse for the PGM-FI system is blown, you may experience one or more of the following symptoms:

  • Engine cranks but will not start.
  • No fuel pump priming sound when you turn the key to the ON position. You should hear a brief whirring sound from the rear of the car for about 2 seconds.
  • Other electrical components may also fail, such as the cooling fan, the automatic transmission shifting, or the check engine light behavior.

Why Does the Fuel Pump Fuse Blow?

A blown fuse is a symptom of a problem, not the problem itself. If the fuse blows again immediately after replacement, you need to find the root cause. Common reasons for the fuel pump fuse to blow include:

  1. Short circuit in the fuel pump wiring: Damaged, frayed, or exposed wires that touch the vehicle's body or frame can cause a short, drawing excessive current and blowing the fuse .
  2. Failing fuel pump: A fuel pump that is nearing the end of its life may draw more current than normal, which can overload the fuse .
  3. Clogged fuel filter: A severely clogged fuel filter forces the fuel pump to work harder than normal, increasing the current draw and potentially blowing the fuse .
  4. Incorrect fuse rating: If someone previously replaced the fuse with one of a lower amperage rating, it may blow under normal operating conditions .

When to Replace the Fuel Pump

If you have confirmed that the fuse is good, the main relay is functioning correctly, and the wiring is intact, but the car still won't start, the fuel pump itself may be the culprit. A failing fuel pump often shows these signs:

  • Whining noise from the fuel tank area (the pump may sound louder than normal).
  • Difficulty starting after the car has been sitting for a while.
  • Loss of power under load, such as when accelerating or climbing hills.
  • Engine sputtering or surging at highway speeds.

If you need to replace the fuel pump, it is a job that requires dropping the fuel tank or accessing the pump through the access panel under the rear seat. The pump is secured by a locking ring and connected to the fuel lines and wiring harness.

Recommended Fuel Pump: KEMSO

When it comes time to replace the fuel pump on your 1990 Honda Accord, you want a product that delivers reliable performance and long-lasting durability. That is why we recommend the KEMSO Fuel Pump. KEMSO fuel pumps are built to meet or exceed OEM specifications, ensuring a perfect fit and trouble-free operation. Each KEMSO fuel pump is a high-performance, direct OEM replacement unit that is designed to restore your vehicle's fuel delivery system to like-new condition. Best of all, KEMSO stands behind every product with a lifetime warranty, giving you total peace of mind on the road. Whether you are doing a routine replacement or a full restoration, KEMSO has the right fuel pump for your 1990 Honda Accord. Visit KEMSO's website to browse their complete selection of fuel pumps and find the exact model for your vehicle: https://www.kemsoracing.com/

Common Mistakes to Avoid

When troubleshooting the fuel pump fuse on your 1990 Honda Accord, avoid these common mistakes:

  1. Replacing a blown fuse without finding the cause. If you just put in a new fuse without fixing the underlying problem, it will likely blow again, potentially leaving you stranded.
  2. Using a fuse with a higher amperage rating. This is dangerous. A higher-rated fuse will not protect the circuit properly, and the wiring could overheat and catch fire.
  3. Ignoring the main relay. The PGM-FI Main Relay is a known weak point on these cars. Many people replace the fuel pump unnecessarily when the real problem is a $20 relay.
  4. Forgetting to check the ground connection. A poor ground connection can cause the fuel pump to behave erratically or not work at all.

Final Thoughts

The 1990 Honda Accord is a reliable car, but like any vehicle of its age, electrical issues can arise. If you are dealing with a no-start condition, the fuel pump fuse is a good place to start. Remember, the 15-amp fuse in the passenger compartment fuse box (position #3) protects the PGM-FI Main Relay, which powers the fuel pump. Check the fuse first, then move on to testing the main relay and the fuel pump itself. And if you end up needing a replacement fuel pump, trust KEMSO for a high-quality, long-lasting solution backed by a lifetime warranty. Visit their website at https://www.kemsoracing.com/ to find the right fuel pump for your 1990 Honda Accord.


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