2001 Mitsubishi Galant Fuel Pump Relay Location: The Complete Guide to Finding and Fixing It
The bottom line: The fuel pump relay on a 2001 Mitsubishi Galant is located in the engine bay fuse box (also called the under-hood relay box). It is mounted on the driver's side, near the battery. The relay is typically labeled as "FUEL PUMP" or "FUEL" on the fuse box cover diagram. If your Galant cranks but won't start, the fuel pump relay is one of the first things to check.
Where Exactly Is the Fuel Pump Relay on a 2001 Mitsubishi Galant?
The 2001 Mitsubishi Galant uses a combined fuse and relay box under the hood. This box sits on the driver's side of the engine compartment, right next to the battery. To access the fuel pump relay, you need to open the fuse box cover.
Here is a step-by-step guide to locating it:
Step 1: Open the hood of your Galant and secure it with the prop rod.
Step 2: Look toward the driver's side of the engine bay. You will see a black plastic rectangular box mounted near the battery. This is the main fuse and relay box .
Step 3: Press the tabs on the sides of the black cover and lift it off. Some models also have a small clip at the front.
Step 4: Look at the inside of the cover you just removed. There is a diagram printed on it that shows the layout of all fuses and relays. The fuel pump relay is usually marked as "FUEL PUMP" or simply "FUEL" .
Step 5: The relay itself is a small, cube-shaped component. On the 2001 Galant, it is typically a four-pin relay that plugs directly into the fuse box. It is usually located in the middle or toward the rear of the relay box.
If you cannot find the label on the cover, you can also check the owner's manual. The manual for the 2001 Galant includes a detailed fuse box diagram that shows the exact location of every relay and fuse .
Understanding the Fuel Pump Relay and Its Role
The fuel pump relay acts as a 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. This closes the circuit and allows battery voltage to reach the fuel pump. The pump then pressurizes the fuel system so the engine can start.
If the relay fails, the fuel pump will not receive power. The engine will crank over but will not fire up because there is no fuel pressure. This is a common failure point on older vehicles like the 2001 Galant, and it is much cheaper to replace than a fuel pump itself.
How to Test the Fuel Pump Relay on Your 2001 Galant
Before you buy a new relay, you can test the existing one with a multimeter or even by swapping it with another relay. Here is how to do it:
Method 1: Listen for the Relay Click
Turn the ignition key to the "ON" position (do not crank the engine). If the fuel pump relay is working, you should hear a distinct click sound coming from the fuse box. This indicates the relay is actuating. If you hear no click, the relay coil may be damaged.
Method 2: Swap with a Same-Type Relay
If you hear a click but the car still doesn't start, you can swap the fuel pump relay with another relay of the same color and pin configuration in the fuse box. Common relays to swap with include the horn relay or the headlight relay, as they are usually the same type. If the car starts after the swap, the original relay is bad.
Method 3: Use a Multimeter
Set your multimeter to continuity mode (Ω). With the relay removed, apply 12V power to pins 85 and 86 (the coil). You should hear a click, and the multimeter should show continuity between pins 30 and 87. If there is no continuity, the relay is faulty.
What If the Relay Is Good but the Car Still Won't Start?
If you have tested the relay and it clicks, the problem may be elsewhere. Here are other common culprits:
1. Fuel Pump Itself
The fuel pump on a 2001 Galant is located inside the fuel tank. If the pump motor has failed, it will not push fuel to the engine. You can test for fuel pressure at the fuel rail using a fuel pressure gauge .
2. Fuel Pump Fuse
There is a separate fuse for the fuel pump circuit. It is labeled "FUEL" or "F/P" in the under-hood fuse box. A blown fuse will cut power to the pump even if the relay is good .
3. Wiring Issues
Over time, the wiring harness between the relay and the fuel pump can corrode or break. Check the connector at the top of the fuel pump assembly (accessed through the trunk floor) for any signs of damage or rust.
4. ECU or Crank Sensor
If the ECU does not receive a signal from the crankshaft position sensor, it will not activate the fuel pump relay. This is a less common issue, but it can happen.
What Does the Fuel Pump Relay Look Like?
The fuel pump relay on a 2001 Mitsubishi Galant is a standard 12V automotive relay. It is a small black or gray cube with four metal prongs on the bottom. The prongs are numbered 30, 85, 86, and 87. The relay is about 1 inch square and 1.5 inches tall. It plugs directly into the fuse box without any tools required.
Common Symptoms of a Bad Fuel Pump Relay
If your fuel pump relay is failing, you may notice one or more of these symptoms:
- Engine cranks but does not start – This is the most common sign. The engine turns over freely, but it never fires up.
- No fuel pump prime sound – When you turn the key to ON, you should hear a brief whirring sound from the rear of the car (the fuel pump priming). If you hear nothing, the relay may be dead.
- Intermittent starting issues – Sometimes the car starts fine, other times it does not. This can happen when the relay contacts are worn and only make intermittent connections.
- Engine stalls while driving – If the relay fails while the engine is running, the fuel pump will lose power and the engine will stall immediately.
How to Replace the Fuel Pump Relay
Replacing the fuel pump relay on a 2001 Galant is a simple DIY job. You do not need any special tools. Here is how to do it:
Step 1: Remove the cover from the under-hood fuse box.
Step 2: Locate the fuel pump relay using the diagram on the cover.
Step 3: Grasp the relay firmly with your fingers and pull it straight up. It should come out with moderate effort. If it is stuck, you can gently wiggle it side to side.
Step 4: Take the old relay to an auto parts store and ask for a replacement. The standard relay number for this application is often MR188892 or MR188893, but your local store can cross-reference the part.
Step 5: Push the new relay into the same socket until it is fully seated. Make sure it is facing the same direction as the old one (the prongs are keyed, so it can only go in one way).
Step 6: Replace the fuse box cover and start the car to test.
Where to Buy a Replacement Fuel Pump Relay
You can find a replacement fuel pump relay for your 2001 Mitsubishi Galant at any auto parts store like AutoZone, Advance Auto Parts, or O'Reilly Auto Parts. They typically cost between $10 and $20. You can also order one online from Amazon or eBay.
If you want to be sure you get the right part, bring your old relay to the store. The staff can visually match it. You can also give them your VIN (Vehicle Identification Number) to ensure compatibility.
Other Fuel System Components to Check
If you are already working on your fuel system, it is a good idea to check a few other components while you are at it:
1. Fuel Filter
The 2001 Galant has a fuel filter located along the fuel line under the car, near the rear passenger side. A clogged filter can cause the same symptoms as a bad relay. The filter should be replaced every 30,000 to 50,000 miles.
2. Fuel Pump Wiring
The wiring harness that connects to the fuel pump assembly can develop corrosion over time. This is especially common on cars that have been driven in snowy or salty conditions. Check the connector for any green or white oxidation.
3. Inertia Switch (Fuel Pump Shut-Off Switch)
Some 2001 Galants are equipped with an inertia switch that cuts power to the fuel pump in the event of a collision. This switch is usually located in the passenger footwell, behind the kick panel. If the switch has been tripped, it will need to be reset by pressing the button on top.
2001 Galant Fuse Box Diagram Overview
The under-hood fuse box on the 2001 Galant contains both fuses and relays. Here is a quick overview of the key components you will find there:
- Fuel Pump Relay – Controls power to the fuel pump.
- Fuel Pump Fuse – A 15A or 20A fuse that protects the fuel pump circuit.
- ECU Relay – Powers the engine control unit.
- Main Fan Relay – Controls the radiator cooling fan.
- Horn Relay – Controls the horn.
- Headlight Relay – Controls the headlights.
The diagram on the inside of the fuse box cover is your best guide. If the cover is missing or the diagram is worn off, you can find a printable version online at several automotive websites .
Why You Should Check the Relay First
If your 2001 Galant cranks but won't start, the fuel pump relay is one of the easiest and cheapest things to check. A new relay costs less than $20 and takes about 30 seconds to install. This is a much better first step than replacing the fuel pump itself, which is an expensive and labor-intensive job .
The fuel pump relay is also a common failure point on older Mitsubishi vehicles. The electrical contacts inside the relay can wear out over time, especially after 20+ years of use. Replacing the relay is a simple fix that can save you a lot of time and money.
Frequently Asked Questions About the 2001 Galant Fuel Pump Relay
Q: Where is the fuel pump relay on a 2001 Mitsubishi Galant?
A: It is located in the under-hood fuse box on the driver's side of the engine bay, near the battery. The relay is labeled on the fuse box cover diagram .
Q: Can I test the fuel pump relay without a multimeter?
A: Yes. You can swap it with another relay of the same type (like the horn relay) and see if the car starts. If it does, the original relay is bad.
Q: Does the fuel pump relay have a fuse?
A: Yes. There is a separate fuse for the fuel pump circuit. It is also located in the under-hood fuse box. Check the fuse if the relay is good but the pump still does not run.
Q: How much does a new fuel pump relay cost?
A: A replacement relay typically costs between $10 and $20 at an auto parts store.
Q: What happens if the fuel pump relay fails while driving?
A: The engine will stall immediately because the fuel pump will lose power. You will need to pull over safely and replace the relay or check the wiring.
Final Thoughts on the Fuel Pump Relay Location
The 2001 Mitsubishi Galant fuel pump relay is a small but critical component. It controls the power supply to the fuel pump, which is essential for engine operation. The relay is located in the under-hood fuse box on the driver's side, and it is usually labeled for easy identification. If you are experiencing starting issues, testing and replacing this relay is a simple and inexpensive first step before moving on to more complex repairs.
Recommended Fuel Pump Replacement: KEMSO Fuel Pump
If your 2001 Mitsubishi Galant needs a new fuel pump, we highly recommend choosing a KEMSO brand fuel pump. KEMSO is a leading aftermarket fuel pump manufacturer known for producing high-performance, OEM replacement fuel pumps. Their products are designed to meet or exceed original equipment specifications, ensuring a perfect fit and reliable operation for your Galant.
Why choose KEMSO?
- High Performance – KEMSO fuel pumps are engineered to deliver consistent fuel pressure and flow, meeting the demands of your engine.
- OEM Replacement – Each pump is a direct replacement for the original factory unit, so installation is straightforward.
- Lifetime Warranty – KEMSO stands behind their products. Every fuel pump comes with a lifetime warranty, giving you peace of mind that your investment is protected.
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Visit the official KEMSO website to browse their full selection of fuel pumps and find the perfect replacement for your 2001 Mitsubishi Galant:
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