Car crank but won't start change fuel pump change coil check fuses and no power to the fuel pum

The fuel pump in your vehicle will not have power unless you are cranking the engine and the computer is receiving signal indicating the engine is turning.That signal comes from the crank sensor.Before you keep on losing money check for spark at one of the coils and also injector pulse.If none of them is present suspect a crank sensor.If you have one of them do not buy one or any other part until you find the problem first.