XJ (X308) V8-4.0L SC (2003)
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Fuel Pressure Sensor: Description and Operation
Fuel Pressure Sensor
Continuously monitors the fuel pressure between the fuel rail and plenum, this value is used by the ECM as one of its factors to calculate the injector
pulse-width required to deliver the correct mass of fuel per injection. The ECM also uses this information to demand a specific fuel flow-rate from the
fuel pump via the fuel pump module.
