How To Check If Fuel Pump Relay Is Bad

If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump which will cause the engine to stall. To check both operations remove the relay by pulling it out of its socket. However if the relay is faulty you may notice some problems with the car s performance.

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Testing the relay of a fuel pump is relatively simple as it does not have many parts.

How to check if fuel pump relay is bad.

Consult your owner s manual or a service manual to find the location of your fuel pump relay. A car s fuel pump relay turns on the fuel pump when the motor runs. Check the fuel pump fuse. Pull the relay straight out from the fuse box to remove it.

The most common parts to burn out or break include the contact and the coil. How to tell if fuel pump relay is bad while driving. If you can t find the fuel pump relay check your vehicle s manual to see if it lists the location. Check in your owner s manual for the location of the fuse box then find the fuse that corresponds to the fuel pump.

Pull it out and inspect it for signs of failure. Often it s not the pump itself that fails to function but the power that supplies it. Grab the relay firmly on either side and pull it straight up and out from the terminals of the fuse box. When either of these begin failing the current to the electrical circuit will be also fail.

If the fuse is blown it will be broken or burned. When a relay is defective it is usually because of a bad coil or bad connection. Your car s fuel pump relay may be able to supply enough power to the vehicle to allow you to drive it. If the relay doesn.

If your car starts to slow down while you are driving it may be a sign of a bad fuel relay. A faulty relay may allow the vehicle to be.