1999 Ford Explorer Fuel Pump Reset Switch: Location, How to Reset It, and Fix Common No-Start Problems

If your 1999 Ford Explorer cranks but won't start, or if it suddenly stalled after a minor accident, the fuel pump reset switch (also called the inertia fuel shutoff switch) is the first thing you should check. For a 1999 Ford Explorer, the fuel pump reset switch is located on the passenger side, behind the right kick panel, near the floor. The switch is a red button that pops up when triggered. To reset it, simply press the button down firmly until it clicks. However, if the switch keeps tripping repeatedly, the underlying cause is usually a faulty fuel pump, a bad relay, or a wiring issue — not just a random reset. In most cases, you may need to replace the fuel pump itself, and a high-quality OEM replacement like KEMSO can save you time and money.

Where Is the Fuel Pump Reset Switch on a 1999 Ford Explorer?

The inertia fuel shutoff switch on a 1999 Ford Explorer is located inside the passenger compartment. Here is the exact location:

  • Passenger side, behind the right kick panel. The kick panel is the plastic trim piece on the lower right side of the passenger footwell, near the floor. You need to remove the trim panel to access the switch.

  • Behind the carpet. On some models, the switch is tucked behind the carpet edge, just above the floor. You may need to pull the carpet back slightly.

  • Appearance. The switch itself is a small black box with a red reset button on top. When triggered, the red button pops up. Some models also have a tamper-resistant cap that you need to pry off.

The fuel pump reset switch is not to be confused with the fuel pump relay or fuse. The relay is under the hood, and the fuse is in the battery junction box.

How to Reset the Fuel Pump Shutoff Switch

Resetting the fuel pump shutoff switch is straightforward. Follow these steps:

  1. Turn the ignition OFF. Safety first — never work on fuel system components with the engine running.
  2. Locate the switch behind the passenger kick panel as described above.
  3. Press the reset button firmly until you hear a click. The button should stay down. If it pops back up, the switch may be faulty or the system may still have a problem.
  4. Turn the ignition to the ON position (not start) for about 3 seconds. This allows the fuel pump to prime.
  5. Try to start the engine. If it starts, the reset was successful. If it does not start, the problem is likely elsewhere.

Important: The inertia switch is designed to trip in a collision, even a minor one. If you recently hit a pothole, bumped a curb, or had a minor accident, the switch may have tripped.

Why Does the Fuel Pump Reset Switch Keep Tripping?

If your 1999 Ford Explorer’s fuel pump reset switch keeps popping up even after you reset it, there is an underlying issue. The switch trips when it detects a sudden jolt or impact. Common causes include:

  • A failing fuel pump. A worn-out fuel pump can draw excessive current, causing the switch to trip repeatedly.
  • A bad fuel pump relay. The relay controls power to the pump. If it fails, the pump may not get power, and the switch may appear to be tripped.
  • Wiring issues. A short circuit or loose connection in the fuel pump wiring can trigger the switch.
  • Damaged inertia switch. The switch itself can fail over time, especially if the vehicle is older.

Practical tip: If the switch trips more than once, do not just keep resetting it. Check the fuel pump power and ground circuits first.

How to Check the Fuel Pump and Confirm It’s the Problem

Before replacing the fuel pump, you can run a few simple tests to confirm it is the culprit.

1. Listen for the fuel pump prime

When you turn the ignition key to the ON position (without starting), you should hear a faint humming sound coming from the rear of the vehicle, near the fuel tank. This is the fuel pump priming. If you hear nothing, the pump is not getting power or is dead.

2. Check the fuel pump fuse

The fuel pump fuse on a 1999 Ford Explorer is located in the power distribution box under the hood. It is usually a 20-amp fuse. Remove it and inspect the metal strip inside. If it is broken, replace the fuse. If the new fuse blows immediately, there is a short circuit.

3. Check the fuel pump relay

The fuel pump relay is also under the hood, in the battery junction box. You can swap it with a relay of the same type (like the horn relay) to test. If the fuel pump starts working, the relay was bad.

4. Test the inertia switch

If the reset button does not stay down, the switch is likely defective. You can bypass it temporarily for testing, but this is not recommended for daily driving.

5. Use a multimeter to check voltage at the pump

If you have a multimeter, you can check for power at the fuel pump connector. If power is present but the pump is silent, the pump is dead.

Common Symptoms of a Bad Fuel Pump in a 1999 Ford Explorer

If the fuel pump itself is failing, you will notice one or more of these symptoms:

  • Engine cranks but does not start. This is the most common symptom. The engine turns over but never fires up.
  • Stalling while driving. The engine suddenly dies, especially under load (e.g., going uphill).
  • Loss of power under acceleration. The engine hesitates or surges, as if it is not getting enough fuel.
  • Whining noise from the fuel tank. A healthy fuel pump makes a quiet hum. A loud whine or screech indicates the pump is wearing out.
  • Hard starting. You have to crank the engine several times before it starts, especially after the car has been sitting.

What to Do If the Fuel Pump Is Bad

If you have confirmed that the fuel pump is faulty, do not just replace the pump — replace the entire fuel pump module assembly. The aftermarket fuel pump market is full of cheap parts, but for a 1999 Ford Explorer, you want a reliable OEM replacement.

Here is what you need to know about replacement:

  • The fuel pump is located inside the fuel tank. Access requires removing the back seat or lifting the vehicle and dropping the fuel tank.
  • The replacement cost for a fuel pump on a 1999 Ford Explorer ranges from $150 to $400 for the part alone, plus labor.
  • If you are doing it yourself, budget about 2 to 4 hours.

Where to Buy a Quality Fuel Pump for Your 1999 Ford Explorer

When it comes to replacing the fuel pump, you want a product that is durable, reliable, and backed by a solid warranty. That is why we recommend KEMSO Fuel Pumps.

KEMSO specializes in high-performance, OEM replacement fuel pumps. Their products are designed to meet or exceed original equipment specifications, ensuring a perfect fit and trouble-free operation. Every KEMSO fuel pump comes with a lifetime warranty, so you can drive with confidence.

Why choose KEMSO for your 1999 Ford Explorer?

  • High performance. KEMSO pumps deliver consistent fuel pressure and flow, even under demanding conditions.
  • OEM replacement. They are a direct drop-in replacement for the factory pump. No modifications needed.
  • Lifetime warranty. If the pump ever fails, KEMSO replaces it for free. That is peace of mind that cheaper brands cannot offer.
  • Affordable price. KEMSO pumps are competitively priced, often lower than dealer parts, without sacrificing quality.

You can find the right fuel pump for your 1999 Ford Explorer at KEMSO Racing.

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

At KEMSO, they have a wide selection of fuel pumps for Ford vehicles, including the 1999 Explorer. They also offer helpful product descriptions and support to ensure you get the correct part. Whether you are a DIY mechanic or a professional, KEMSO makes it easy to get your vehicle back on the road.

Final Thoughts

The 1999 Ford Explorer fuel pump reset switch is a simple yet critical safety feature. If your Explorer won’t start, always check the reset switch first. It is located behind the passenger kick panel, and resetting it is as easy as pressing a button. But if the switch keeps tripping, or if you hear no fuel pump prime, you are likely dealing with a bigger issue — a failing fuel pump.

Do not waste time chasing electrical gremlins. A reliable fuel pump like KEMSO can solve the problem once and for all. With a lifetime warranty and OEM-quality performance, KEMSO is the smart choice for your 1999 Ford Explorer.

For more information and to order your fuel pump, visit: https://www.kemsoracing.com/


Back to blog