depends on what kind of car
Check for proper installation of fuel pump and filter.
Fuel filter and installation, $40. Fuel pump and installation, $450.
The fuel pump pressure sensor monitors the fuel pressure of the vehicle.
fuel pump removal and installation 2000 GM Yukon Denali
The fuel pump pressure sensor monitors the fuel pressure of the vehicle.
Do a fuel pressure check-no fuel pressure means defective fuel pump-
It pumps fuel at a higher pressure than a standard fuel pump.
The fuel pump switch is what tells the fuel pump what pressure to pump fuel into the fuel rail
disconnect the battery. Relieve fuel pressure,remove fuel tank and all electrical and fuel lines to it,remove fuel feed, vapor and return lines from the top of the tank,fuel pump is located in side the tank by 5 nuts. separate the pump from the assembly . installation is the reverse.
There should be an access panel in the trunk. # Disconnect the negative battery cable. # Open the fuel tank filler cap to vent off pressure in the tank. # Relieve the fuel pressure. # Remove the access panel in the trunk. # Detach the electrical connector from the fuel pump. # Remove the fuel pump mounting nuts. # Remove the fuel pump assembly from the tank. # Installation is the reverse of removal. # Torque the fuel pump mounting nuts to 4 ft. lbs. (6 Nm).
Fuel pump pressure (Maximum) 75 psi
If you have power to the fuel pump and it will not run it is defective. If it runs but a fuel pressure test verifies that the fuel pressure is low and you replaced the fuel filter then the pump is defective.