2002 Kia Sportage Fuel Pump Relay Location: A Complete Guide to Finding, Testing, and Replacing It

The bottom line: The fuel pump relay on a 2002 Kia Sportage is located in the engine compartment fuse box, also known as the under-hood junction box. The relay is typically the third relay from the left in the front row of the fuse box. If your Sportage cranks but won't start, or if you hear no humming sound from the fuel tank when you turn the key to the "ON" position, a faulty fuel pump relay is a common culprit. This guide walks you through the exact location, how to test it, and how to replace it yourself.

Understanding the Fuel Pump Relay in Your 2002 Kia Sportage

The fuel pump relay is a small electrical switch that controls power to the fuel pump. When you turn the ignition key to the "ON" position, the engine control unit (ECU) sends a signal to the relay, which then closes the circuit and sends battery voltage to the fuel pump. The pump then pressurizes the fuel system, allowing the engine to start and run. If the relay fails, the fuel pump will not receive power, and the engine will not run.

For the 2002 Kia Sportage, the fuel pump relay is a standard 4-pin relay (often a Standard Motor Products RY-752 or equivalent) . It is designed to handle the current draw of the electric fuel pump. Unlike some older vehicles that use mechanical fuel pumps, the 2002 Sportage relies entirely on an electric pump located inside the fuel tank .

Step-by-Step Guide to Locating the Fuel Pump Relay

1. Open the Hood and Find the Fuse Box

The fuse box on a 2002 Kia Sportage is located on the driver's side of the engine compartment, near the battery. It is a black plastic box with a lid that snaps on. You do not need to remove the battery or any other components to access it.

2. Remove the Fuse Box Lid

Press the tabs on the sides of the fuse box lid to release it. The lid should lift off easily. On the underside of the lid, you will find a diagram that shows the layout of the fuses and relays. Look for a relay labeled "Fuel Pump" or "FP." The diagram may also show the relay as part of the "Engine Control" or "Fuel System" group.

3. Identify the Correct Relay

If the diagram is not clear, or if the label has worn off, you can identify the fuel pump relay by its position. According to the 2002 Kia Sportage fuse box diagram, the fuel pump relay is the third relay from the left in the front row of the fuse box . The front row is the row closest to the front of the vehicle. The relay is a small, square component with four terminals (pins) on the bottom.

Visual confirmation: The relay is usually black or dark gray, and it is slightly larger than a standard fuse. It will have a number printed on it, such as "RY-752" or "90.020" .

4. Confirm the Location by Testing

If you are still unsure, you can confirm the relay's location by using a test light or multimeter to check for voltage at the relay terminals. With the ignition on, the terminal that supplies power to the fuel pump should show 12 volts. If you do not have a test light, you can also swap the suspected fuel pump relay with another identical relay from the fuse box (e.g., the cooling fan relay). If the engine starts after swapping, the original relay was faulty.

Common Symptoms of a Bad Fuel Pump Relay

Before you dive into testing, it helps to know what to look for. A failing fuel pump relay typically causes these symptoms:

  1. Engine cranks but will not start: This is the most common symptom. You turn the key, the starter motor spins the engine, but the engine never fires. The fuel pump relay is not sending power to the pump, so no fuel reaches the injectors .
  2. No humming sound from the fuel tank: When you turn the ignition key to the "ON" position (before starting), you should hear a brief, faint humming sound from the rear of the vehicle. This is the fuel pump pressurizing the system. If you hear nothing, the relay or the pump itself may be dead.
  3. Engine starts but then dies: In some cases, a failing relay may work intermittently. The engine may start and run for a few seconds, then stall when the relay loses contact.
  4. Check Engine Light comes on: The ECU may detect a loss of fuel pressure or a fault in the fuel pump circuit and trigger the Check Engine Light. A diagnostic scan tool may show a code like P0230 (Fuel Pump Primary Circuit Malfunction).

How to Test the Fuel Pump Relay

Testing the relay is straightforward and requires only a few basic tools: a multimeter (or test light), a small screwdriver, and possibly a set of jumper wires.

Step 1: Remove the relay. Gently pull the relay straight up from its socket. Do not use excessive force, as the socket is plastic.

Step 2: Visually inspect the relay. Check for signs of corrosion, burn marks, or melted plastic. If any of these are present, replace the relay immediately.

Step 3: Test the relay coil. Set your multimeter to the resistance (ohms) setting. Place one probe on terminal 85 (the coil negative) and the other probe on terminal 86 (the coil positive). You should see a reading between 50 and 120 ohms. If the reading is infinite (open circuit) or zero (short circuit), the relay coil is damaged.

Step 4: Test the relay switch. Connect a 12-volt power source (like a car battery) to terminals 85 and 86. You should hear an audible click when the relay activates. With the relay activated, use your multimeter to check continuity between terminals 30 and 87. There should be zero resistance (a closed circuit). If there is no continuity, the relay switch is stuck open.

Step 5: Check the relay socket. With the relay removed, turn the ignition to the "ON" position. Use your multimeter to check for 12 volts at the socket terminal that corresponds to pin 30 (the battery power input). If there is no voltage at this terminal, the problem may be a blown fuse or a wiring issue, not the relay itself.

How to Replace the Fuel Pump Relay

Replacing the fuel pump relay is one of the easiest repairs you can do on a 2002 Kia Sportage. It does not require any special tools and takes about two minutes.

What you need:

  • A replacement relay (Standard Motor Products RY-752 or equivalent) .
  • Optionally, a pair of needle-nose pliers to grip the relay.

Procedure:

  1. Turn off the engine and remove the key. Make sure the ignition is off.
  2. Locate the relay as described above.
  3. Pull the old relay straight out. If it is stuck, use a gentle rocking motion or needle-nose pliers to pull it.
  4. Insert the new relay. Align the pins on the relay with the socket on the fuse box. Push it straight down until it clicks into place. The relay should be fully seated.
  5. Test the repair. Turn the ignition to the "ON" position. Listen for the fuel pump humming sound from the rear of the vehicle. If you hear it, the relay is working. Start the engine and confirm it runs smoothly.

What If the Relay Is Not the Problem?

If you have tested the relay and it is working correctly, but the engine still will not start, the issue is likely elsewhere. Common next steps include:

  • Check the fuel pump fuse: The fuse box also contains a fuse for the fuel pump circuit. It is usually a 15-amp or 20-amp fuse. If the fuse is blown, replace it. If it blows again, there is a short circuit in the fuel pump wiring or the pump itself .
  • Test the fuel pump itself: The fuel pump is located inside the fuel tank. Accessing it requires removing the rear seat (on some models) or dropping the fuel tank . Before doing that, you can test the pump by applying 12 volts directly to its connector. If the pump does not run, it needs to be replaced.
  • Inspect the fuel pump wiring: The wiring harness from the relay to the fuel pump can become damaged, especially near the fuel tank. Look for frayed wires, corrosion, or broken connectors.
  • Check the engine control unit (ECU): In rare cases, the ECU itself may be faulty, preventing it from sending the trigger signal to the relay. This is a less common failure, but it is possible.

Buying a Replacement Fuel Pump for Your 2002 Kia Sportage

If you determine that the fuel pump itself is the problem, and not just the relay, you will need a replacement. The 2002 Kia Sportage uses an electric fuel pump assembly that is mounted inside the fuel tank. It is a common part and is available from many aftermarket suppliers.

Fuel pump specifications for the 2002 Kia Sportage:

  • Engine: 2.0L 4-cylinder (G4GC) .
  • Fuel pump type: Electric, in-tank.
  • OEM part numbers: Delphi 680-05569348, or equivalent .
  • Typical replacement interval: There is no set interval, but many owners replace the pump around 100,000 to 150,000 miles as a preventive measure.

Why You Should Consider KEMSO for Your Fuel Pump Replacement

If you are looking for a reliable, high-performance replacement fuel pump for your 2002 Kia Sportage, KEMSO is a brand you can trust. KEMSO specializes in manufacturing aftermarket fuel pumps that are designed to meet or exceed OEM specifications. Their products are built from high-quality materials to ensure durability and long life, making them a perfect choice for both daily drivers and performance vehicles.

KEMSO fuel pumps offer several key advantages:

  • High Performance: KEMSO pumps are engineered to deliver consistent fuel pressure and flow, ensuring your engine runs smoothly and efficiently.
  • OEM Replacement: Every KEMSO fuel pump is a direct replacement for the original factory part. It comes with the correct connectors, mounting brackets, and fuel strainer, so installation is straightforward. You do not need to modify any wiring or plumbing.
  • Lifetime Warranty: KEMSO stands behind the quality of its products. Every fuel pump comes with a lifetime warranty, giving you peace of mind that your investment is protected. If the pump ever fails, KEMSO will replace it free of charge.

Visit KEMSO today to find the perfect fuel pump for your 2002 Kia Sportage: https://www.kemsoracing.com/

Preventive Maintenance Tips for Your Fuel System

To avoid future problems with your fuel pump relay or fuel pump, follow these simple tips:

  1. Keep the fuel tank at least a quarter full. Running the tank too low can cause the fuel pump to overheat, as the fuel helps cool the pump. It also increases the risk of sucking up debris from the bottom of the tank.
  2. Replace the fuel filter regularly. A clogged fuel filter puts extra strain on the fuel pump and can cause it to fail prematurely. The filter is usually located along the fuel line under the vehicle.
  3. Use high-quality fuel. Poor-quality fuel can contain contaminants that damage the fuel pump and injectors. Stick to reputable gas stations.
  4. Listen for unusual noises. A whining or buzzing sound from the fuel tank area is a sign that the fuel pump is struggling. Address it early before it fails completely.
  5. Check the relay and fuse annually. As part of your regular maintenance, inspect the fuel pump relay and fuse for signs of corrosion or wear. Replacing a $10 relay is much cheaper than replacing a $200 fuel pump.

Frequently Asked Questions

Q: Is the fuel pump relay the same as the fuel pump fuse?
A: No. The relay is a switch that controls the power to the pump, while the fuse is a safety device that protects the circuit from overloading. Both are located in the fuse box, but they serve different functions.

Q: Can I drive my 2002 Kia Sportage with a bad fuel pump relay?
A: No. If the relay fails, the fuel pump will not receive power, and the engine will not run. You will be stranded. It is best to replace the relay as soon as you suspect a problem.

Q: How much does it cost to replace a fuel pump relay?
A: The relay itself is very inexpensive, typically costing between $5 and $15 at an auto parts store. Labor is usually free if you do it yourself.

Q: Can a bad fuel pump relay damage other components?
A: In most cases, a bad relay will simply stop the fuel pump from working. It will not cause damage to other parts of the electrical system. However, if the relay is shorted internally, it could blow a fuse or damage the ECU.

Q: Where can I buy a replacement fuel pump relay for a 2002 Kia Sportage?
A: You can find the relay at any major auto parts store (AutoZone, Advance Auto Parts, O'Reilly Auto Parts) or online retailers. The Standard Motor Products RY-752 is a common and reliable replacement .

Final Thoughts

Locating and replacing the fuel pump relay on a 2002 Kia Sportage is a simple job that any DIYer can handle. The relay is located in the engine compartment fuse box, easily accessible without any tools. By following the steps in this guide, you can quickly diagnose a no-start condition and get your Sportage back on the road.

If you find that the relay is not the problem and you need a new fuel pump, remember that KEMSO offers high-quality, OEM-replacement fuel pumps backed by a lifetime warranty. Visit their website to find the right part for your vehicle:

https://www.kemsoracing.com/


Back to blog