If you’re experiencing problems with the fuel pump in your 1987 Ford F150, then you might need to consult a wiring diagram to troubleshoot the issue. This article will provide you with a detailed wiring diagram for the fuel pump circuit in your F150, as well as some frequently asked questions about fuel pump wiring in general.
What is a fuel pump wiring diagram?
A fuel pump wiring diagram is a graphical representation of the electrical circuit that powers your fuel pump. It shows how the wires are connected and where the power and ground connections are located. By studying the wiring diagram, you can gain a better understanding of how the fuel pump circuit works, and you can use this knowledge to troubleshoot any problems that you might encounter.
Where can I find a fuel pump wiring diagram for my 1987 Ford F150?
You can find a fuel pump wiring diagram for your 1987 Ford F150 in the owner’s manual, or you can search for it online. There are many websites that offer wiring diagrams for various vehicles, and you can usually find one for your specific model and year with a simple search.
What are the components of the fuel pump circuit in my F150?
The fuel pump circuit in your F150 consists of several components, including the fuel pump relay, the inertia switch, the fuel pump itself, and the wiring that connects these components together. The fuel pump relay is responsible for sending power to the fuel pump, and the inertia switch is designed to shut off the fuel pump in case of an accident or other impact.
How do I troubleshoot problems with my fuel pump?
If you’re experiencing problems with your fuel pump, then you can use a wiring diagram to help you troubleshoot the issue. Start by checking the power and ground connections to the fuel pump relay, and then move on to the wiring that connects the relay to the fuel pump. If all of the wiring is intact, then you might need to replace the fuel pump itself.
Wiring diagram for the fuel pump circuit in a 1987 Ford F150
| Fuel Pump Relay | Green/Yellow wire |
| Inertia Switch | Red/Yellow wire |
| Fuel Pump | Black/Pink wire |
| Ground | Black/White wire |
The fuel pump relay in your F150 is located in the Power Distribution Box (PDB) under the hood. The PDB is identified by a black plastic cover with a diagram of the fuses and relays on the inside of the lid. Look for the relay labeled “Fuel Pump” or “FP” and check that it’s receiving power from the battery. If the relay is functioning properly, then move on to the inertia switch.
The inertia switch is located in the driver’s side footwell, behind the kick panel. It’s a rectangular switch with a red button on top. Check that the switch is in the “on” position, and that it’s receiving power from the fuel pump relay. If everything checks out with the inertia switch, then move on to the fuel pump itself.
The fuel pump is located inside the fuel tank, and it’s accessed by removing the tank from the vehicle. Before you do this, make sure that the wiring between the fuel pump relay and the fuel pump is intact. If there are any breaks or damage to the wiring, then you’ll need to repair it before you can test the fuel pump.
Once you’ve verified that the wiring is intact, you can test the fuel pump by using a multimeter to check for continuity across the fuel pump’s electrical connectors. If there’s no continuity, then the fuel pump needs to be replaced.
Conclusion
Troubleshooting the fuel pump circuit in your 1987 Ford F150 can be a daunting task, but with the help of a wiring diagram and some basic knowledge of electrical circuits, you can get your truck back on the road in no time. By following the steps outlined in this article, you’ll be able to diagnose and repair any issues with your fuel pump circuit, and you’ll be able to enjoy reliable performance from your F150 for years to come.
