Ford F57Z-9H307-J Sender And Pump Assembly

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A gauge and adapter set will be needed to perform a fuel pressure test. Keep in mind that the fuel pump functions when the engine is cranking or running and receives ignition reference pulses from the electronic ignition system. Once you have released the fuel pressure, it is advisable to cover up the fuel connections with a towel. If your car has an electric pump, you can hear it immediately when someone turns on ignition key; there should be a whirring noise heard at the gas filler opening. If not, check out fuel pump fuse, inspecting the fuel relay and wiring as well as ensure inertia switch works properly. At the relay connector, you can verify voltage, and at the fuel pump harness connector just check for battery voltage. In case voltage is present but still there is no action from the pump, check for continuity to ground at the fuel pump harness connector and replace if necessary. To check operating pressure, relieve fuel system pressure, attach a gauge to the test port, and start the engine. Troubleshoot any problems based on this gauge reading.

The tool is installed about ten inches behind the fuel filter in some models.