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The year, make, model and engine would help but, in most cases the crank sensor tells the ECM (Engine Control Module) the engine has rpms so the ECM keeps the fuel pump running. Some engines use the oil pressure switch to keep the fuel pump running.

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11y ago

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Related Questions

Does engine have to run for fuel pump to run?

If the vehicle has an electric fuel pump, then no, it runs no matter if the engine is running or not, but it will only run for a few seconds unless the engine is started. However if the pump is mechanical then the engine must be running for the pump to work.


What does fuel pump switch do?

The fuel pump switch is what tells the fuel pump what pressure to pump fuel into the fuel rail


How do you prime the fuel pump on a 1993 Chevrolet Silverado?

It is an electric fuel pump and does not require priming.Cranking the engine should start the pump to run. The computer shuts it off after 3 seconds if the engine has not started.


What is engine fuel pump?

A pump that pumps fuel from the fuel tank to the engine.


What is the deference between fuel pump and water pump?

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Where is the fuel pump on a 1984 Chevy Celebrity?

The location of the fuel pump depends on which engine the car has. If it is the 2.5L 4 cylinder fuel injected engine the fuel pump is in the fuel tank. If it is the carburetted 2.8L V6 the fuel pump is on the lower part of the engine block on the radiator side of the engine.


Where is the fuel pump located in an automobile?

That depends on the year, make, model, engine. In general a carbureted engine has a mechanically driven fuel pump mounted on the engine. A fuel injected engine normally has a electric fuel pump in the fuel tank.


When you change the fuel filter and drain the fuel line do you have to prime the fuel pump?

No, it is self priming. You may however have to use starter fluid to get the engine started.


How and where can you tap on the fuel pump in order to get the engine started?

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How do you change the fuel pump on a 1986 Chevy Celebrity?

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Does the energy for a fuel pump come from the engine?

Depends. On older cars, a mechanical fuel pump was used. It mounted to the side of the engine and the crank shaft moved the arm of the pump to pump gas to the carb. The pump now is usually located in the tank and is electric. When you turn the ignition key to on, it sends a signal to the pump which pressurizes the pump. When the car is started, the pump runs and sends the right amount of fuel to the fuel injectors though a series of relays and sensors.