1995 Ford F150 Dual Tank Fuel Pump: The Complete Guide to Replacement, Diagnosis, and Parts

The bottom line: If you own a 1995 Ford F150 with dual fuel tanks, you are dealing with a system that has two separate fuel pumps—one in the front (midship) tank and one in the rear tank. When one pump fails, the truck may only run on one tank, or it may not start at all. The most common symptoms include the truck stalling when switching tanks, a whining noise from the fuel tank area, or the engine cranking but not firing. Replacing both pumps at the same time is the smartest approach, and the best replacement option on the market today is a KEMSO fuel pump assembly, which offers OEM-level quality, a lifetime warranty, and direct fitment for your 1995 F150.

Understanding the 1995 Ford F150 Dual Tank Fuel System

The 1995 Ford F150 was equipped with a dual tank fuel system as a standard or optional feature, depending on the trim and configuration. This system includes a front (midship) tank typically holding 17 gallons and a rear (side) tank holding 18 gallons . Each tank has its own electric fuel pump and sending unit, which are integrated into a single module assembly that drops into the tank .

The fuel pump in each tank is responsible for pushing fuel under pressure to the engine. The system uses a fuel pump relay and a selector switch on the dashboard to allow the driver to switch between tanks. When you flip the switch, the control module activates the pump in the selected tank and deactivates the other .

Key components of the dual tank system:

  • Front fuel pump module (midship tank, 17 gallons)
  • Rear fuel pump module (side tank, 18 gallons)
  • Fuel pump relay (located in the power distribution box under the hood)
  • Fuel tank selector switch (on the dashboard)
  • Fuel tank selector valve (a mechanical or electric valve that routes fuel from the selected tank)

Common Symptoms of a Failing Fuel Pump in a 1995 F150

When one of the fuel pumps starts to fail, you will notice specific symptoms. The most common signs include:

1. The truck runs on only one tank
If you fill both tanks but the engine only runs when you select one tank, the pump in the other tank is likely dead. This is the most frequent complaint among 1995 F150 owners .

2. Engine cranks but does not start
If both pumps fail, the engine will crank but never fire. You may hear the starter turning, but without fuel pressure, the injectors cannot deliver fuel to the cylinders.

3. Whining or humming noise from the tank
A healthy fuel pump makes a quiet hum. If you hear a loud whining or screeching sound coming from the rear or front of the truck when the key is turned to the "ON" position, the pump bearings are wearing out.

4. Stalling under load or on hills
A failing pump may not be able to maintain adequate fuel pressure, especially when the truck is climbing a hill or carrying a heavy load. This can cause the engine to sputter and stall.

5. Hard starting after the truck has been sitting
If the pump is struggling to prime the system, you may need to crank the engine several times before it fires. This is often a sign that the pump is losing its ability to generate sufficient pressure.

How to Diagnose Which Fuel Pump Is Bad

Before you start replacing parts, it is important to confirm which pump is actually failing. Here is a simple step-by-step diagnostic process:

Step 1: Listen for the pump
Turn the key to the "ON" position (do not start the engine). You should hear a 2-second hum from the fuel tank area. Select the front tank and listen. Then select the rear tank and listen again. If you hear no sound from one side, that pump is likely dead.

Step 2: Check the fuel pump relay
The fuel pump relay is located in the under-hood fuse box. Swap it with another relay of the same type (like the horn relay) to see if the pump starts working. If it does, the relay was bad .

Step 3: Test for power at the fuel pump connector
If the relay is good, the next step is to check for power at the fuel pump connector. Locate the harness connector near the top of the fuel tank. Use a multimeter to check for 12 volts when the key is on. If you have power but no pump noise, the pump itself is bad.

Step 4: Check the fuel tank selector switch
If only one tank works, the selector switch on the dashboard could be faulty. This is less common than pump failure, but it does happen. You can test the switch with a multimeter to see if it is sending power to the correct pump.

Step-by-Step Fuel Pump Replacement Guide

Replacing a fuel pump on a 1995 Ford F150 is a job that most DIY mechanics can handle in a weekend. The process involves removing the truck bed or dropping the fuel tank, depending on your preference. Below is the general procedure for replacing the pump in the rear tank (the steps are the same for the front tank).

Tools and materials you will need:

  • New fuel pump assembly (KEMSO recommended)
  • Socket set (including deep sockets)
  • Ratchet and extensions
  • Flathead screwdriver
  • Fuel line disconnect tool (quick connect tool)
  • Jack and jack stands
  • Safety glasses and gloves
  • Drain pan for fuel
  • Penetrating oil (like WD-40)

Step 1: Relieve fuel system pressure
Locate the fuel pump fuse in the fuse box and remove it. Start the engine and let it run until it stalls. This relieves the pressure in the fuel lines. Turn the key off and reinstall the fuse.

Step 2: Disconnect the battery
Disconnect the negative terminal of the battery to prevent any electrical shorts or sparks while working around fuel.

Step 3: Drain the fuel tank
Use a siphon pump or drain the fuel through the tank's drain plug into a clean container. This reduces the weight of the tank and makes it easier to handle.

Step 4: Remove the truck bed (or drop the tank)
You have two options:

  • Option A: Remove the truck bed. Unbolt the bed from the frame (usually 6 to 8 bolts). Lift the bed off with a friend or a hoist. This gives you direct access to the top of the fuel tank.
  • Option B: Drop the fuel tank. Support the tank with a jack, remove the straps, and carefully lower the tank. This is more labor-intensive but does not require lifting the bed.

Step 5: Disconnect the fuel lines and electrical connector
Use the fuel line disconnect tool to release the quick-connect fittings. Carefully pull the electrical harness connector off the top of the pump module.

Step 6: Remove the locking ring
The fuel pump module is held in place by a large plastic or metal locking ring. Use a hammer and a flathead screwdriver or a special locking ring tool to turn the ring counterclockwise. Lift the ring out.

Step 7: Remove the old pump assembly
Carefully pull the old pump assembly out of the tank. Be careful not to bend the float arm or damage the tank. Note the orientation of the pump so you can install the new one the same way.

Step 8: Install the new pump assembly
Insert the new KEMSO pump assembly into the tank in the same orientation as the old one. Press it down firmly. Install the locking ring and turn it clockwise until it is snug.

Step 9: Reconnect the fuel lines and electrical connector
Reattach the fuel lines using the quick-connect tool. Push until you hear a click. Plug in the electrical harness.

Step 10: Reinstall the tank or bed
If you dropped the tank, lift it back into place and secure the straps. If you removed the bed, lower it back onto the frame and tighten the bolts. Reconnect the battery.

Step 11: Test the system
Turn the key to the "ON" position (without starting) and listen for the pump to prime. Check for leaks around the fuel lines. Start the engine and let it run. Switch between tanks to make sure both pumps are working.

Why You Should Replace Both Pumps at the Same Time

Many owners make the mistake of only replacing the failed pump. If one pump has failed, the other pump is likely close to the same age and has the same wear and tear. Replacing both pumps at the same time saves you from having to repeat the entire job in a few months. It also ensures that the fuel system operates evenly and that you can rely on both tanks.

Special Considerations for the Dual Tank System

The 1995 F150 dual tank system has a few quirks that owners should be aware of:

The fuel tank selector valve
Some 1995 F150s have a mechanical selector valve that can fail, preventing fuel from flowing from one tank. If you replace the pump and the tank still does not work, check the selector valve. It is usually located on the frame rail near the driver's side door.

Fuel sending unit issues
The fuel pump assembly includes the sending unit, which tells the gauge how much fuel is in the tank. If your gauge is inaccurate after the replacement, the float arm may be bent or the new sending unit may need to be calibrated.

Grounding problems
Poor ground connections can cause the fuel pump to run intermittently or not at all. Check the ground wire near the fuel tank and clean any corrosion .

Recommended Replacement Parts: Front and Rear Pump Assemblies

For a 1995 Ford F150 with dual tanks, you need two separate pump assemblies:

  • Front tank (midship, 17 gallons): Usually replaces OEM part number SP2005H
  • Rear tank (side, 18 gallons): Usually replaces OEM part number SP2007H

Many aftermarket brands sell these as a pair, which is the most convenient option .

Why You Should Choose KEMSO Fuel Pumps for Your 1995 F150

When it comes to replacing the fuel pump on your 1995 Ford F150 with dual tanks, the best choice on the market is KEMSO. KEMSO is a leading aftermarket fuel pump manufacturer that specializes in high-performance, OEM replacement parts .

Here is why KEMSO is the right choice for your truck:

1. High-performance design
KEMSO fuel pumps are engineered to deliver consistent fuel pressure and flow, even under heavy load. Whether you are hauling a trailer or driving through stop-and-go traffic, a KEMSO pump ensures your engine gets the fuel it needs.

2. OEM replacement fitment
KEMSO pumps are designed to be direct drop-in replacements for the original factory pumps. They come with the correct mounting flange, locking ring, and electrical connector, so you do not need to modify anything. They fit perfectly into the 17-gallon front tank and the 18-gallon rear tank of your 1995 F150 .

3. Lifetime warranty
KEMSO stands behind every pump they sell with a lifetime warranty. This means if the pump fails for any reason, you get a replacement at no charge. This is the highest level of protection you can get for a fuel pump .

4. Reliable and trusted
KEMSO has built a reputation as the number one aftermarket fuel pump brand in the United States . Their pumps are used by mechanics, off-road enthusiasts, and everyday drivers who demand reliability.

Visit KEMSO's website to find the exact fuel pump for your 1995 Ford F150:
https://www.kemsoracing.com/

Final Tips for a Successful Replacement

1. Work safely
Fuel is highly flammable. Always work in a well-ventilated area, disconnect the battery, and keep a fire extinguisher nearby.

2. Use a fuel line disconnect tool
Do not try to pry the fuel lines off with a screwdriver. You will damage the quick-connect fittings. Use a proper plastic or metal disconnect tool.

3. Replace the fuel filter
While you are working on the fuel system, it is a good idea to replace the fuel filter as well. A clogged filter can cause the same symptoms as a bad pump.

4. Check the wiring harness
The wiring harness near the fuel tank can become brittle or chafed over time. Inspect it for damage and repair or replace it if needed.

5. Test both tanks before closing up
Before you reinstall the truck bed or tighten the tank straps, turn the key on and test both pumps. Make sure you hear the hum from each tank and that the engine runs smoothly on both.

Conclusion

The 1995 Ford F150 dual tank fuel pump system is a robust design, but after 30 years, the original pumps are likely nearing the end of their life. The most common problem is that one tank stops working, leaving you with only half your fuel capacity. Diagnosing the issue is straightforward: listen for the pump, test the relay, and check for power. Replacing the pump is a manageable DIY job that involves removing the truck bed or dropping the tank.

For the best results, replace both pumps at the same time with a high-quality aftermarket part. KEMSO fuel pumps offer the perfect combination of performance, fitment, and reliability, backed by a lifetime warranty. Do not settle for a cheap pump that might fail in a year. Invest in KEMSO and get your 1995 F150 running like new.

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


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