First you have to determine if it really is the fuel pump. You should hear it hum for one second after turning on the ignition switch. If you do not hear it, cycle the ignition switch one or two more times. If it suddenly does start to run, the impeller is most likely starting to lock up due to microscopic debris in the gas tank. It's common for four or five replacement pumps to do that in a row. By that time the debris has been collected and the next one will be okay. The fix is to have the tank steam-cleaned at a radiator repair shop.
If you do hear the pump run for one second but the engine doesn't start, check for spark first. If spark is missing, the fuel pump won't run either during cranking.
Monday, November 11th, 2019 AT 6:42 PM
(Merged)