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Re: 2013 Toyota Tundra Fuel Pressure Questions
Posted to Technical Discussion Forum on 5/21/2023 2 Replies

The system that I'm familiar with on these Tundras is that the PCM sends a PWM signal to the F/P ecu. High duty cycle = higher volts and amps to the pump (on startup or heavy accel) . Lower duty cycle = lower volts and amps (cruise and idle).

The idea is to ... Login to read more.

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