Sylvie Willis
The 1987 Ford F150, F250, and F350 trucks have two fuel tanks. These trucks have two fuel pumps, one mounted externally and one inside the tank. The external pump is located under the driver's feet, mounted on the inside frame rail. The in-tank pump is electric and is usually in the fuel tank itself.
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What You'll Learn
The 1987 Ford F150 requires an in-tank and an in-line pump
The in-tank pump is an electric fuel pump. The 1987 model is one of the early dual-tank trucks that had this feature before Ford switched to high-pressure in-tank fuel pumps. The high-pressure pump is located under the driver's feet, mounted on the inside frame rail.
The in-line pump is also electric and is part of the front fuel pump hanger assembly, which includes a tank seal. The tank capacity is 17 gallons, although one source states it is 19 gallons.
If you have a dual-tank 1987 Ford F150, each tank will have its own fuel pump and sending unit located inside the tanks. You can check if the pumps are working by observing the schrader valve while someone cranks the key. If the plunger in the middle of the valve is depressed, fuel is being delivered and the pumps are working.
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The HP fuel pump is located under the driver's feet
The 1987 Ford F-150 is a dual-tank truck with its own fuel pump and sending unit located inside the tanks. The HP fuel pump is located under the driver's feet, mounted on the inside frame rail. This is the same location for both dual and single tank trucks.
The fuel pump is an essential component of a car's fuel system, helping move fuel from the tank to the injectors at a specific pressure. In modern vehicles with gasoline direct injection (GDI), there is a second, high-pressure pump. The primary fuel pump assembly includes the fuel level float, level sensor, and related components. The pump pulls fuel through a filter at the bottom of the tank and transfers it to the outlet tube, which routes the fuel toward the engine. As the fuel level rises and falls, the fuel level float moves, changing the resistance in the fuel level sensor, which in turn alters the fuel level reading on the dashboard.
The 1987 Ford F-150's fuel pump is located inside the tank, and can be accessed through a fuel pump access door underneath the rear seat. This makes it easier to get to the pump from inside the cabin. It is important to consult the appropriate service information and relieve the system pressure before opening the fuel system to access the high-pressure fuel pump, as direct injection fuel systems are under extreme pressure.
The HP fuel pump, located under the driver's feet, is a high-pressure in-tank fuel pump. This pump is responsible for supplying fuel to the engine at the required pressure. It is mounted on the inside frame rail, which provides support and stability to the pump. The location of the pump under the driver's feet allows for easy access and maintenance, although it may be more challenging to reach in 4x4 vehicles due to the front drive shaft.
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The fuel pump relay is connected to the fuel pumps in each tank
The 1987 Ford F-150 has dual fuel tanks, with each tank containing its own fuel pump and sending unit. The fuel pump relay is a crucial component in the ignition process, as it controls the flow of electrical power to the fuel pump. It is an electrical switch that ensures the engine's efficiency by acting as a gateway between the vehicle's electrical and fuel delivery systems.
The location of the fuel pump relay may vary across different makes and models of vehicles, depending on the layout, design, and space constraints. However, in most vehicles, the fuel pump relay is located under the hood in the fuse box at the engine bay. This fuse box is typically a long black box that contains various fuses and relays. The relay is featured on a circuit board connected to other fuses and is under the command of the car's computer system.
To locate the fuel pump relay, you can look for a code or label on the cover of the relay box, indicating its purpose, such as 'fuel pump'. The relay is often a small, rectangular, or square-shaped component with multiple electronic connection pins or terminals. It is important to keep the relay clean, as it can get dirty easily, especially if it is located inside the engine bay, where it is exposed to heat and dust.
Additionally, it is important to ensure that the fuel pump is receiving a good, clean voltage that won't fluctuate based on other electrical conditions of the car. Rewiring the fuel pump can help achieve this, ensuring that the pump receives 14 volts when in use, improving its efficiency.
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The 1987 Ford F250 6.9L Diesel has a supply pump fuel pressure of 6-10 PSI
The fuel pump in this vehicle is responsible for supplying fuel under pressure to the engine, ensuring the necessary fuel delivery for combustion. However, achieving the correct fuel pressure is crucial for the engine to function properly. If the fuel pressure is too low or too high, it can lead to engine performance issues or even damage.
In the case of the 1987 Ford F250 6.9L Diesel, the specified fuel pressure range of 6-10 PSI is critical. If the fuel pressure exceeds this range, it could indicate a problem with the fuel pump or other components in the fuel system.
Maintaining the correct fuel pressure is essential for several reasons. Firstly, it ensures that the engine receives the appropriate amount of fuel, preventing lean or rich fuel mixtures that can hinder performance and fuel efficiency. Secondly, proper fuel pressure helps maintain the integrity of the fuel injectors, as they are designed to operate within a specific pressure range. Lastly, the fuel pump plays a role in maintaining fuel efficiency and reducing emissions by ensuring precise fuel metering.
Some sources suggest that the 1987 model may have had an external fuel pump, located under the driver's feet, mounted on the inside frame rail. However, Ford transitioned to high-pressure in-tank fuel pumps in later models, improving fuel delivery and engine performance.
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The 1987 Ford F150 has a rear steel tank
The 1987 Ford F-150 is equipped with a rear steel fuel tank. This model features a fuel system that includes both in-tank and externally mounted fuel pumps. The external pump is located under the driver's feet, mounted on the inside frame rail. This setup remained consistent for dual-tank and single-tank configurations.
The rear steel tank in the 1987 Ford F150 is designed to optimise the vehicle's performance and fuel efficiency. To maintain the fuel system's optimal condition, it is essential to regularly check for any worn-out or malfunctioning parts and replace them with direct-fit OE replacements. This ensures that the fuel is delivered at the correct pressure and flow rate, contributing to the overall performance and longevity of the vehicle.
The fuel tank sending unit is another crucial component mounted inside the rear steel tank. This unit plays a vital role in indicating the correct amount of fuel in the tank, ensuring that the dash gauge accurately reflects the fuel level. A faulty sending unit can lead to inaccurate fuel level readings, necessitating its replacement with a reliable alternative.
The 1987 Ford F150's rear steel tank is also complemented by a fuel pump strainer, which serves to protect the fuel system by capturing any contamination present in the fuel. Additionally, a fuel tank vent hose seal is available as a replacement part, ensuring a proper fit without requiring any modifications for installation.
Maintaining the rear steel tank and its associated components is essential for the overall performance and longevity of the 1987 Ford F150. By paying attention to the fuel pump, sending unit, strainer, and vent hose seal, owners can ensure the optimal condition and functionality of their vehicles.
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Frequently asked questions
Yes, the 1987 Ford F-150 has a 2 pump system that requires an in-tank and an in-line pump.
No, the 1987 Ford F250 diesel has an external fuel pump mounted on the inside frame rail.
No, the 1987 Ford E350 has an engine-driven fuel pump mounted on the left lower front of the motor.
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