Priming Fuel Pump

[oversteer180]

On an s13, shouldnt the fuel pump still prime on the "on" position without the ecu hooked up?

[nissanman04]

nope, the fuel pump signal goes through the ecu. it needs to be hooked up.

[The_Chosen_One]

From the wiring schematics if I read it right, when you turn to "ON" it sends a signal to the ECU which than the ECU sends that signal to the Fuel Pump relay, when the ECU doesnt sense any RPM's it shuts off the fuel pump.

[ca18datsun510]

From the wiring schematics if I read it right, when you turn to "ON" it sends a signal to the ECU which than the ECU sends that signal to the Fuel Pump relay, when the ECU doesnt sense any RPM's it shuts off the fuel pump.