Can a fuel pump run when the engine is off?
So this is normal for the fuel pump (or what sounds like the fuel pump) to run with the vehicle turned off after being driven 4 or 5 hours ago? It must have been running for about 10 minutes, when I put the key in the ignition and turned it to on without starting the engine and the sound went away.
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.
Why is the fuel pump relay not closing?
If jumping the fuel pump relay makes the pump run, and if the relay tests good. Then you need to determine why the ECM is not telling the relay to close. Start by testing continuity back to the ECM. Here is the electrical diagram for the 01 Tib Fuel Pump Relay
When to run from full to close to empty?
I see your point in running from full to close to empty rather than make frequent fuel stops. What kills the fuel pumps prematurely are drivers that run near empty and then fill with a $5 or 10 and therefore are constantly running without much fuel in the tank.
What happens if there is no fuel in the fuel pump?
There are a host of issues that could prevent a car from starting, but a lack of fuel is one of the first things to check. If the fuel pump can’t send fuel to the engine, it won’t start. If the vehicle starts but runs rough and possibly dies, the engine might not be getting enough fuel.
When is it time to replace your fuel pump?
Like any device, however, fuel pumps can and do eventually wear out after thousands of miles of use. If your car struggles with weak or inconsistent power, it may be time to replace the fuel pump on your car. Have you ever had to deal with a failing fuel pump?
When do I turn ignition on fuel pump keeps running?
I don’t think anywhere in the thread he has said that the engine is turning over, only the hum of a motor running, which is most likely the fuel pump. However, he still should be able to get the engine to turn over with the starter, unless the battery voltage is low and the voltage circuit in the starter relay is keeping it from activating.
How does the fuel pump work in a car?
The fuel pump is a device that moves fuel from your tank to the engine, supplying the fuel at a constant pressure to ensure that your engine runs smoothly.