To move fuel, under pressure, from the fuel tank to the engine.
fuel
The main function of the fuel pump is to pump the fuel from the tank to the combustion chamber at the correct amount and correct time...:P
The fuel pump relay switch looks like the normal electric switch. The function of fuel pump relay switch is turn the fuel pump on.
A fuel pressure test done at the fuel rail will verify the condition of the fuel pump. Before going to that much trouble check the fuse, and fuel pump relay. If either one is defective the fuel pump will not function.
There is no reset function on a fuel pump relay. It is controlled by the engine computer.Dodge does not use inertia/reset switches.There is no reset function on a fuel pump relay. It is controlled by the engine computer.Dodge does not use inertia/reset switches.
Check fuse no 6. 20Amp located under the seat that is the fuel pump relay fuse. also check the function of the fuel pump relay itself.
To move gasoline, under pressure, from the fuel tank in the rear of the vehicle to the engine in the front.
in the event of a collision the fuel pump is turned off
The fuel pump relay, is controlled by the EEC module, which provides power to fuel pump under various operating conditions. When ignition is in "OFF" position, EEC power and fuel pump relay contacts are open. After engine starts, power to fuel pump is supplied through fuel pump relay. EEC module senses engine speed and shuts off fuel pump relay when engine stops.
The function of an inertia switch is bacically to "stop" the electric fuel pump from causing an explosion in a possible crash involving fuel tank rupture.
The fuel pump switch is what tells the fuel pump what pressure to pump fuel into the fuel rail
If there is fuel in the tank and it is making it's way to the fuel pump, and the fuel pump will not pump fuel, the pump is obviously defective. Replace the fuel pump with a new one.