What do you need to know about a fuel pump relay?
The main function of a fuel pump relay is to supply the right amount of current to the fuel pump from the battery to pump fuel to the engine. Once you turn your key to ignition, you will hear a low sound noise which means that your fuel pump is priming the engine with the help of a fuel pump relay.
Why does my fuel pump not prime when I turn it on?
Pulled fuel pump relay and put in a jumper wire to run the fuel pump and it started. Put the fuel pump relay back in and it starts and drives, but the fuel pump still doesn’t prime when turning the key on. I’m afraid that after sitting overnight, it will once again refuse to start.
What does it mean when your fuel pump is low?
Once you turn your key to ignition, you will hear a low sound noise which means that your fuel pump is priming the engine with the help of a fuel pump relay. With that being said, it is ideal to wait for a few seconds before cranking your car’s starter motor to avoid problems with starting the engine.
How can I get a new fuel pump to run?
Cannot get new fuel pump to run. Relay will not energize and gray wire has no bat on it. If power is put to gray wire back at frame rail near pump it will run and engine will start. Had no ground to terminal 35 of relay. Replaced PCM and got ground. Still have no bat to terminal 35.
Pulled fuel pump relay and put in a jumper wire to run the fuel pump and it started. Put the fuel pump relay back in and it starts and drives, but the fuel pump still doesn’t prime when turning the key on. I’m afraid that after sitting overnight, it will once again refuse to start.
Where do you find the fuel pump relay?
When you shut off the ignition, it powers down the fuel pump. In most vehicles, the fuel pump relay can often be found in the fuse box in the engine bay, which is usually a long black box which contains fuel pump relay along with various other fuses and relays.
What happens if the fuel pump relay fails?
If the fuel pump relay fails, the fuel pump will receive no power and will not operate, thus it will be silent. Always start with a visual inspection first before moving on to other tests, which will be specified below.
How much does it cost to replace a fuel pump relay?
You can easily find fuel pump relays online or at any automotive spare parts shop.The average replacement cost of the fuel pump relay ranges from $90 to $150, of which $20-$50 is for parts and the remaining is the labour cost.