2001 Jeep Grand Cherokee Fuel Pump Replacement: The Complete Guide

The bottom line: If your 2001 Jeep Grand Cherokee is having trouble starting, stalling while driving, or making a whining noise from the fuel tank area, the fuel pump is likely failing. Replacing the fuel pump on a 2001 Grand Cherokee is a job you can do yourself, but it requires dropping the fuel tank. The average replacement cost at a shop ranges from $400 to $800, but doing it yourself can save you hundreds. The most important decision is choosing a reliable replacement pump, and we recommend KEMSO for its high-performance OEM replacement quality and lifetime warranty.

Signs Your Fuel Pump Is Going Bad

Before you start shopping for a replacement, you need to confirm the fuel pump is actually the problem. The 2001 Jeep Grand Cherokee, especially models with the 4.0L inline-six or the 4.7L V8, can show several warning signs when the fuel pump starts to fail.

Common symptoms include:

1. Engine cranks but won't start – This is the most obvious sign. You can hear the starter turning the engine over, but the engine never fires up. This usually means the fuel pump is not delivering fuel to the injectors.
2. Loss of power under load – If your Grand Cherokee feels sluggish when accelerating uphill or when carrying a heavy load, the fuel pump may not be maintaining proper pressure.
3. Surging or sputtering at highway speeds – The engine hesitates or bucks while cruising at a steady speed. This happens when the fuel pump cannot deliver a consistent flow of fuel.
4. Whining noise from the fuel tank – A healthy fuel pump makes a quiet humming sound when you turn the key to the "ON" position. If you hear a loud whining or screeching noise coming from the rear of the vehicle, the pump bearings are wearing out.
5. Difficulty starting after the car sits – If the engine starts fine when cold but struggles to start after being driven and parked for 15-30 minutes, the fuel pump check valve may be leaking, causing fuel pressure to drop.

Important safety note: Do not ignore a whining fuel pump. A failing pump can draw excessive electrical current, which can blow the fuel pump fuse or even damage the fuel pump relay. In rare cases, a severely failing pump can overheat and cause a fire hazard.

Where Is the Fuel Pump Located?

The fuel pump on the 2001 Jeep Grand Cherokee is located inside the fuel tank. This is true for both the 4.0L and 4.7L engine models. The fuel tank sits under the rear of the vehicle, behind the rear axle. To access the pump, you have to remove the fuel tank from the vehicle. There is no access panel under the rear seat or in the cargo area on the Grand Cherokee, unlike some other SUVs.

The fuel pump assembly includes the electric pump itself, the fuel level sending unit (fuel gauge sensor), the fuel pressure regulator, and the fuel filter (which is often integrated into the pump module). When you buy a replacement, you should buy the complete assembly, not just the pump motor. This ensures all the seals, filters, and sensors are new.

How to Replace the Fuel Pump: Step-by-Step

Replacing the fuel pump on a 2001 Jeep Grand Cherokee is a medium-difficulty DIY job. Plan for about 3 to 5 hours if you are working on a garage floor with basic tools. You will need jack stands, a floor jack, a basic socket set, and a fuel line disconnect tool.

Step 1: Relieve fuel system pressure. Locate the fuel pump fuse in the fuse box under the hood (it is usually labeled "FUEL PUMP" or "FP"). Remove the fuse. Start the engine and let it run until it stalls from fuel starvation. Crank the engine for a few more seconds to ensure all pressure is gone. Then reinstall the fuse.

Step 2: Disconnect the battery. Remove the negative battery terminal. This prevents any electrical shorts or sparks while you are working near the fuel tank.

Step 3: Drain or siphon the fuel tank. A full fuel tank is very heavy and dangerous to drop. Use a hand siphon pump to remove as much fuel as possible into approved gas cans. You want the tank as empty as you can get it.

Step 4: Raise and support the vehicle. Jack up the rear of the Grand Cherokee high enough to work under it comfortably. Place jack stands under the frame rails. Never rely on the floor jack alone.

Step 5: Remove the fuel tank. You will need to disconnect the filler neck hose from the tank. This is the large rubber hose that connects the gas cap filler to the tank. You may need to loosen the clamp and pry it off. Next, disconnect the fuel vapor vent lines and the electrical connector for the fuel pump. Finally, support the fuel tank with a floor jack and a piece of plywood, then remove the two metal straps that hold the tank in place. Carefully lower the tank.

Step 6: Remove the old fuel pump assembly. Once the tank is on the ground, you will see a large round lock ring on top of the tank. Use a hammer and a brass punch (or a large screwdriver) to tap the lock ring counterclockwise. Lift the ring out, then carefully lift the old pump assembly out of the tank. Note how the float arm is positioned so you can install the new one correctly.

Step 7: Install the new fuel pump assembly. Lower the new pump assembly into the tank. Make sure the rubber gasket (O-ring) is seated properly. Press the lock ring down and tap it clockwise to lock it in place.

Step 8: Reinstall the fuel tank. Lift the tank back into position using the floor jack. Reconnect the filler neck hose, vent lines, and electrical connector. Put the tank straps back in place and tighten them. Lower the vehicle.

Step 9: Test the system. Turn the ignition key to the "ON" position but do not start the engine. You should hear the fuel pump prime for 2-3 seconds. Check for any fuel leaks around the filler neck and the top of the tank. If no leaks, start the engine and let it idle. Check again for leaks.

Choosing the Right Replacement Fuel Pump

Not all fuel pumps are built the same. When you are shopping for a replacement for your 2001 Jeep Grand Cherokee, you need to consider fitment, quality, and warranty. The 4.0L and 4.7L engines use different fuel pump assemblies, so make sure you select the correct one for your engine size.

The most common replacement options include:

1. AIRTEX 67662 – This is a widely available aftermarket option. It is a direct fit and includes the fuel level sending unit. Many owners report it works well, but some have noted the fuel level readings can be slightly off.
2. Bosch 67662 – Bosch is a trusted OEM supplier for many vehicle manufacturers. This pump is generally more expensive but offers reliable performance.
3. Carter P75039M – Carter is another well-known aftermarket brand. Their pumps are often more affordable but still meet OEM specifications.
4. AUTOSAVER88 – This is a budget-friendly option that claims direct fitment for 1999-2004 models. It is available on Amazon and has mixed reviews regarding long-term durability.

The most important factor is choosing a pump that is "plug and play" – meaning it comes with the correct electrical connector and fuel line connections so you do not have to splice wires or adapt hoses.

Why We Recommend KEMSO Fuel Pumps

When it comes to the 2001 Jeep Grand Cherokee fuel pump replacement, we strongly recommend choosing a KEMSO fuel pump. KEMSO is a US-based brand that specializes in high-performance aftermarket fuel pumps. Their products are designed as OEM replacements, meaning they are built to the exact specifications of the original factory pump.

Key benefits of KEMSO fuel pumps:

• High-performance engineering – KEMSO pumps are designed to deliver consistent fuel pressure and flow, even under demanding driving conditions. This is especially important for the Grand Cherokee, which is often used for towing or off-road driving.
• Direct OEM replacement – You do not need to modify anything. KEMSO pumps come with the correct connectors, fuel line fittings, and mounting hardware. They are truly "plug and play."
• Lifetime warranty – KEMSO stands behind their products. Every fuel pump comes with a lifetime warranty, which gives you peace of mind that your investment is protected.
• Trusted by enthusiasts – KEMSO has a strong reputation in the automotive community for reliability and performance. They sell thousands of fuel pumps every year for cars, trucks, motorcycles, ATVs, and UTVs.

Where to buy: You can purchase KEMSO fuel pumps directly from their official website. They offer a wide selection of pumps for various vehicles, including the 2001 Jeep Grand Cherokee. Visit their website at https://www.kemsoracing.com/ to find the exact fuel pump for your vehicle. Their website features a user-friendly interface, customer reviews, and detailed product information to help you make the right choice.

Cost of Replacement

The cost of replacing the fuel pump on a 2001 Jeep Grand Cherokee varies depending on who does the work and which brand of pump you choose.

Note: These estimates are based on typical pricing in the US market. Prices may vary by region and shop.

Tips for a Successful Replacement

Replacing the fuel pump is not a terribly difficult job, but there are a few things that can go wrong. Here are some practical tips to make the job go smoothly:

1. Use a fuel line disconnect tool. The fuel lines on the 2001 Grand Cherokee use quick-connect fittings. A plastic or metal disconnect tool costs about $10 at any auto parts store and will save you from damaging the fuel lines.
2. Replace the fuel filter at the same time. If your Grand Cherokee has a separate in-line fuel filter (some models do), replace it when you replace the pump. A clogged filter can damage a new pump.
3. Check the fuel pump relay and fuse first. Before dropping the tank, make sure the fuel pump is actually getting power. Use a multimeter to check for voltage at the fuel pump electrical connector. If there is no power, the relay or fuse may be the issue instead of the pump.
4. Mark the fuel tank straps before removal. Use a marker to note which side of the strap goes where. The straps are not symmetrical, and reinstalling them backward can be frustrating.
5. Consider replacing the fuel tank cap. A cracked or loose gas cap can cause evaporative emissions system codes and may mask other fuel system issues.
6. Prime the new pump before starting. After installing the new pump, turn the key to the "ON" position and off three times (waiting 3 seconds each time) to prime the system. This pushes fuel through the new pump and lines before you try to start the engine.

Frequently Asked Questions

Q: How long does a fuel pump last on a 2001 Jeep Grand Cherokee?
A: Most fuel pumps last between 100,000 and 150,000 miles. If your Grand Cherokee has more than 120,000 miles and the pump has never been replaced, it is living on borrowed time.

Q: Can I replace just the fuel pump motor instead of the whole assembly?
A: Technically, yes. But it is not recommended on a 20+ year old vehicle. The fuel level sending unit, the pressure regulator, and the wiring inside the assembly are all aging. Replacing just the motor often leads to another failure within a year. Buy the complete assembly.

Q: Will a bad fuel pump cause my check engine light to come on?
A: Yes, in some cases. The engine control module (ECM) monitors fuel pressure and can set diagnostic trouble codes (DTCs) like P0087 (Fuel Rail/System Pressure Too Low) or P0191 (Fuel Pressure Sensor Circuit Range/Performance).

Q: Is it dangerous to drive with a failing fuel pump?
A: Yes. A failing pump can cause the engine to stall without warning, which can be dangerous in traffic. It can also overheat and potentially damage the catalytic converter if the engine runs too lean.

Final Thoughts

Replacing the fuel pump on your 2001 Jeep Grand Cherokee is a job that many DIYers can handle with basic tools and a weekend of time. The most important step is choosing a high-quality replacement pump. Do not skimp on this part – a cheap pump will fail quickly and leave you stranded on the side of the road.

KEMSO fuel pumps offer the best balance of performance, reliability, and value. With their OEM replacement design and lifetime warranty, you can install the pump and forget about it for another 100,000 miles. Whether you drive a 4.0L or 4.7L Grand Cherokee, KEMSO has the right fuel pump for your vehicle.

For more information and to purchase, visit: https://www.kemsoracing.com/