I've noticed that the fuel pump on the vehicle never stops running. I checked if there are any leaks and I haven't found any. I checked if the fuses are worn as well. I tried pulling the relay out, but it's still running. The battery goes out after the car sat for the night. What might be causing the fuel pump to work continuously?
Your fuel pump relay is only used to power the fuel pump at startup. After the engine starts, the fuel pump receives power from the engine oil pressure switch on the lower left side of the engine. When fuel pump stays running after shut down, then disconnect the oil pressure switch to see if the pump shuts off. Replace the switch if it is shorted. If you would like, a certified technician from YourMechanic can come to your home or office to inspect your vehicle, the fuel pump and switch.
Have a car question? Get free advice from our top-rated mechanics.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%