Ford Fuel Pump Relay Wiring Diagram

Ford fuel pump relay wiring diagram. This is a diagram of the fuel pump relay in a Ford vehicle. The relay is responsible for providing power to the fuel pump when the engine is running.

When the engine is not running, the relay will prevent the fuel pump from being powered on.

If you’re looking for a Ford fuel pump relay wiring diagram, you might have come to the right place. I’m going to show you how to wire up a fuel pump relay so that your fuel pump will stay on when you turn your ignition switch to the “on” position. First, let’s talk about why you would want to do this mod in the first place.

If you have an older car, chances are that your fuel pump is only getting power when the engine is cranking over. This means that if your engine stalls for any reason, your fuel pump will also shut off and you’ll be stuck with no way to get your engine started again. With a properly wired fuel pump relay, your fuel pump will stay on even if your engine stalls.

This will allow you to restart your engine and get back on the road quickly. The last thing you want is to be stranded on the side of the road with no way to get home! Now that we’ve covered the why, let’s get into the how.

Wiring a fuel pump relay is actually pretty simple. All you need is a few tools and some basic electrical knowledge. First, locate your fuse box and find the fuse for yourfuel pumps .

On most cars, it will be labeled as such. Once you’ve found it, remove the fuse and set it aside (you’ll need it later). Next, use a Wire Splice Kit or butt connectorsto splice intothe wire going fromthe battery positive terminaltoyourfuelpump .

Make surethatyou usea good quality connectorso thatit doesn’t come apart later on down the road .

Ford Fuel Pump Relay Wiring Diagram


How Do You Bypass a Ford Fuel Pump Relay?

If your Ford vehicle has been having issues with the fuel pump, it may be time to check the fuel pump relay. The relay is responsible for powering the fuel pump, and if it fails, the pump will not receive the necessary power to run. Fortunately, you can easily test the relay to see if it is working properly.

If not, you’ll need to replace it.

How Do You Check the Fuel Pump Relay on a Ford F150?

To check the fuel pump relay on a Ford F-150, first locate the relay panel under the hood. On the side of the relay panel, there is a diagram that shows which relays control which systems. Locate the fuel pump relay and remove it from the panel.

With the key in the ON position, test for power at both terminals on the fuel pump relay. If there is power at only one terminal, then the fuel pump relay is faulty and needs to be replaced.

How Do You Test a Fuel Pump Relay?

How to Test a Fuel Pump Relay Your car’s fuel pump relay is responsible for supplying power to the fuel pump. When the engine is first started, the relay closes and sends power to the fuel pump.

Once the engine has started, the relay opens and cuts off power to the pump. If your car’s fuel pump relay is not working properly, it can cause your car to have starting issues or stall while driving. Testing your fuel pump relay is a relatively simple process that only requires a few tools.

multimeter test light jumper wires

Step 1 – Locate Your Relay The first step in testing yourfuel pump relay is finding it. The specific location of your vehicle’s fuelpump relay will vary depending on make and model, but it is usually locatedin the engine bay near the fuse box or battery.

Once you have locatedthe correct relay, use your jumper wires to jump across terminals 30and 87a on the socket. These are generally labeled on most relays. Step 2 – Check for Power at Terminal 30

With your test light or multimeter setto DC voltage mode, touch one probe to terminal 30 onthe socket (this should be live all of the time) and touchthe other probe to ground (any metal surface onthe vehicle). If you see no voltage or flickering voltagedisplay on your test light or multimeter, this indicates that there issomething wrong with either terminal 30 itselfor with its connection tot he battery positive post orother parts ofthe electrical system..

If you do seevoltage at this point , moveon to testing terminal 86 next . Step 3 – Check for Power at Terminal 86 With Engine Off Touch one probeofyour test lightor multimeter toucheterminal 86onthe socket(thisshouldhave no powerwhen thee ngineis turnedoff ).If you see anyvoltageat thistestpointwith thee ngine turnedoff ,it indicatesthatthere maybeshortsomewhere in theelectrical systemor apossible problemwith thee nginecontrol module( ECM ). Ifthere isno voltageat thistest pointwith thee ngine turned offmoveon totestingterminal 85next .

Why is My Fuel Pump Relay Not Getting Power?

If your fuel pump relay is not getting power, it could be for a few reasons. One possibility is that the fuse that supplies power to the relay has blown. Another possibility is that there is a problem with the wiring between the fuse box and the relay.

If you have checked these things and still can’t figure out why the relay isn’t getting power, it’s possible that there is a problem with the computer that controls the relay.

Wiring Diagram Diagnostics: #2 2005 Ford F-150 Crank No Start

1990 Ford Fuel Pump Relay

If your 1990 Ford is having fuel pump issues, it may be due to a faulty fuel pump relay. The fuel pump relay is responsible for supplying power to the fuel pump, and if it fails, the pump will not be able to operate. There are a few symptoms that can indicate a failing relay, such as the engine stalling or sputtering, or the car being difficult to start.

If you suspect a problem with the fuel pump relay, it’s important to have it checked out by a mechanic as soon as possible so that any further damage can be avoided.

1988 Ford F250 Not Getting Fuel

If your 1988 Ford F250 isn’t getting fuel, there are a few things you can check. First, make sure that the fuel tank is full and that the fuel line is not clogged. Next, check the fuel pump to see if it is working properly.

Finally, check the carburetor to see if it needs to be cleaned or replaced.


If you’re looking for a Ford Fuel Pump Relay Wiring Diagram, you’ve come to the right place. Here at AutoZone, we carry a wide selection of diagrams for many different makes and models. Whether you need a diagram for a 1999 Ford F-150 or a 2005 Chevy Silverado, we have the right one for you.

To find the diagram you need, simply enter your vehicle’s year, make and model into the search bar above. Once you find the diagram you’re looking for, click on it to enlarge it and print it out. If you can’t find what you’re looking for, feel free to contact us and we’ll be happy to help.

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Robert is a lifelong enthusiast of all things automotive. He has been working with wiring diagrams and schematics since he was in high school, and continues to use them as the foundation for his knowledge today.

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