How Do U Check Fuel Pump Relay

The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine.

How do u check fuel pump relay.

The car acts. If it looks fine check the voltage at the pump itself to make sure the charge that s leaving the fuse gets to the pump. Unplug the fuel pump relay but do not break the cover and connecting tabs. The ignition or powertrain control module pcm usually controls the fuel pump relay.

Before you check your fuel pump find the fuse that corresponds to the pump and pull it out to see if it is broken or burned. A high pitched sound occurs when the engine starts. A car s fuel pump relay turns on the fuel pump when the motor runs. It is often found in the fuse box located in the engine bay and.

When switched on the fuel pump relay will provide current to the fuel pump so that it may function. The fuel pump turns on but fuel pressure is low. If this looks alright then perform a fuel pressure test. Find the fuel pump relay in your vehicle s fuse box.

Consult your owner s manual or a service manual to find the location of your fuel pump relay. Step 2 remove the fuel pump relay. To check both operations remove the relay by pulling it out of its socket. So any faults with it can cause fuel pump issues.

Acceleration is uneven this is also a sign of a bad fuel filter so have the fuel filter checked first in this case. One is for input voltage one is the ground pin one is the load pin that goes to the fuel pump and. Step 3 identify the components. The main fuse box is usually located underneath the hood near the front of your vehicle but there may be a smaller fuse box under the steering column inside your vehicle as well.

When a relay is defective it is usually because of a bad coil or bad connection. Replacing the fuel pump relay may not fix the problem because the source of the trouble may be the fuel pump. Here are some common signs of a faulty fuel pump. A fuel pump relay functions primarily to maintain a consistent voltage supply to the fuel pump.

Pull the cover off of the fuse box and look at the diagram printed on it to know where the fuel pump relay is.