To replace the fuel pump, the fuel tank have to be lowered from the human body of the truck. On optimal of the hefty weight the the tank, fuel is a volatile liquid, making the dangerous to handle. Although difficult, this job deserve to be achieved with the best equipment and patience.

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This article uses to the second generation Dodge lamb (1994-2001).

The fuel pump, filter, and sending unit are all situated in the fuel tank together one assembly. The fuel pump is electric and driven by a long-term magnet electric motor. As the rotor inside the pump turns, fuel is drawn into the pump and also pressurized throughout the fuel system. The fuel sending unit\"s float lever drops through the fuel level in the tank. The sending unit is a change resistor, meaning the sensors resistance to present flow changes as its position moves. This adjust in existing is displayed by the driver\"s information center (gas gauge). Fuel contamination from dirt and water is the main source of damages to fuel mechanism components. One means to alleviate your chances of drawing in dirt and also water native the main tanks at gas station is by pour it until it is full up once the terminal is no being re-supplied. Also, stations with much more business tend to have actually fresher gas.

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Materials NeededBasic tool set (ratchet, sockets, screwdrivers, pliers)HammerStrap wrench10mm wrenchFuel tank siphon pumpOne or much more floor jacks, stands, and also blocks of timber (if necessary)Electrical ice (optional)Fuel pressure gauge with drain hose (optional)

There are several methods to change the fuel pump. The most common method is by dropping the fuel tank, which will be covered here. The bed the the truck deserve to be tilted or removed. A hole deserve to be cut in the bed directly over the fuel pump together well.

Have her fuel level together low as feasible before remove of the tank. Every gallon that fuel weighs 6 pounds, so every gallon lighter your tank is, the much less you have to worry about handling.

Step 1 – set the emergency brake

If friend need an ext room under the behind of your truck, ar wheel chocks in prior of the former wheels and also raise it through a floor jack. Ar jack was standing on every side against the structure rails. Block of wood deserve to be supplied to reduce damage caused by the sharp locations of the jack stands.

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Figure 1. Placing a jack stand versus the framework rail.

Step 2 – Disconnect battery and also siphon fuel native tank

Use a 10mm wrench to eliminate the an adverse (black) battery cable. Location it in one area it can not accidentally call the battery, or wrap that with electric tape.

Use a suitable siphon pump to remove excess fuel native the tank. Tanks filled with fuel can weigh in access of 200 pounds, making the very challenging to remove.

Step 3 – relax the fuel pressure

Find the fuel pump fuse and also remove it. There should be a diagram on the optimal or bottom the the under-hood fuse box cover v its location. Once removed, begin the engine and wait for the engine to stall top top its own.

If the fuel pump is not working, locate the push relief valve top top the fuel rail. You will have to push the little valve in with a driver or attach a fuel press gauge through a drain hose. Be careful using the screwdriver method because fuel will certainly spray out in all directions.

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Figure 2. Inside the red circle is the fuel press relief valve.

Step 4 – ease the fuel tank straps

Loosen the straps utilizing a 15mm socket, but do not totally remove them. As soon as they space loosened, eliminate the skid bowl on the front and also side that the fuel tank.

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Figure 3. You have the right to see the two straps stop this fuel tank come the truck.

Step 5 – Disconnect fuel filler neck from body of truck

When you open up the fuel door, you will see three or 4 Phillips head screws surrounding the filler water tap opening. When these space removed, loosen the fuel filler hose and vent water tap clamps situated near the filler neck. Pull the hoses away from the fuel filler neck.

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Figure 4. The red circles indicate the areas of the Phillips screws and also hose clamps.

Step 6 – Disconnect electrical connector and also fuel pressure hose

Lower the tank under as far as feasible without damaging the hoses attached to the fuel pump. As soon as enough an are is made, reach up, disconnect the electric connector by advertise on the red locking tab, and squeezing the flexible tab top top the connector plug. When squeezing, traction the connector plug away from the fuel pump.

To eliminate the fuel press hose, squeeze out the sides of the plastic fast disconnect fitting and pull the hose away from the fuel pump.

Before lowering the tank come the ground, twin check there space no various other connections to the tank.

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Figure 5. A view of the top of the fuel pump through the fuel hose and also electrical connector removed.
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Figure 6. Number one indicates the electric connector, and also number two shows the fuel pressure hose.

Step 7 – change fuel pump

You will view a plastic lock ring neighboring the fuel pump assembly. It have the right to be eliminated with a strap wrench type tool, or using a screw driver/punch and also a hammer. Use a driver to pry the fuel pump assembly far from the rubber O-ring and lift the fuel pump out of the tank.

Before installation the new fuel pump, do sure any parts that were not had with the new assembly are transferred over. The new pump\"s instructions should carry out the specifics. Install the brand-new rubber O-ring onto the tank. Make sure it stays level/in-place together the brand-new pump is being installed. Position the new pump at an angle to very first insert the sending out unit\"s float, and also then push the fuel pump down onto the O-ring. Tighten the plastic lock ring, and get prepared to download the tank ago onto the truck.

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Figure 7. The fuel pump assembly.

Step 8 – progressive tank into the truck and reconnect hoses

Raise the tank high enough to begin tightening a fuel tank strap. Store enough an are between the tank and also the truck to affix the electrical connector and also the fuel push hose come the fuel pump. Continue raising the fuel tank till you have the right to re-connect the fuel filler hose and also vent hose. As soon as connected, attach the fuel filler neck to the body of the truck. On slide the skid plates earlier into place and tighten the tank down to the truck through the tank straps.

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Step 9 – examine for leaks

Re-connect the an unfavorable battery cable and install the fuel pump fuse. Turn the ignition on and inspect around the fuel tank because that leaking fuel. If nobody is found, the surroundings is done!

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Figure 8. If you check out fuel leaking indigenous the tank, clean the area and tighten the fuel pump lock ring. If fuel is still leaking, the rubber O-ring will have to be replaced.

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