What do you need to know about fuel pump relays?
What do you need to know about fuel pump relays?
If the relays are good you should hear the fuel pump pressure up. The fuse box above the fuel filter has EFI fuses. The fuse box by the headlight has the main efi relay. On the battery another box of fuses. None of them are for fuel. But should be checked. There are only three options. Fuses, Relays, Fuel Pump.
Where is the fuel pump fuse box located?
The engine’s or the dashboard fuse box is usually a long black box containing a fuel pump relay and various other fuses and relays. For different vehicles, the fuel pump relays can be located in different places.
What to do if your fuel pump has no power?
Found the relays and swapped the EFI relay with the ACC relay and power relay, no power to pump. Swapped the circuit opening relay and no power. Checked all the fuses and all good. Disconnected the fuel line and ran power directly to the pump and it came on but no fuel moved.
Where is the fuel pump in a car?
The fuel pump is located in the fuel tank, near the rear of the vehicle and can usually be heard when the engine starts. A healthy fuel pump plus a healthy fuel pump relay will often produce a variation of a low volume hum or whine which can be heard from inside the vehicle, or from the outside, near the fuel tank.
What does a bad fuel pump relay do?
A bad fuel pump relay will cut the power to your car and stall the engine while you are driving. Keep in mind that a bad fuel pump relay might be faulty or in total failure. In either example, the engine might stall. A relay that is faulty might allow you to restart your engine after you give it a break.
What are the symptoms of a bad fuel pump relay?
One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. 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.
Is there a relay switch for the fuel pump?
In addition to controlling the flow of fuel to the engine, the relay also keeps the electric fuel pump from functioning after a collision, minimizing the chance of fire igniting after an accident. After a collision, the fuel pump relay switch is automatically activated, preventing the vehicle from cranking.
What does an electric fuel pump relay do?
A fuel pump relay is an electrical device much like an automotive fuse. It directs current to the electric fuel pump and ensures that the part receives enough power to operate properly, but not too much as to damage it.
