It is called an "inertia switch" and is used by Ford.
Your fuel pump should run for one second after turning on the ignition switch. If you do not hear that hum, why are you saying the fuel pump does not need to be replaced? Chrysler pumps almost always fail by failing to start up. GM pumps usually fail while the engine is already running.
Have you checked for spark? What about diagnostic fault codes? If you can get the car to an auto parts store, the people at most of them will read fault codes for you for free, otherwise you will need a code reader.
Wednesday, June 22nd, 2016 AT 8:58 PM