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Home >> Mercury >> 1998 >> Mystique Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Fuel Rail Pressure (FRP) Sensor
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Fuel Rail Pressure (FRP) Sensor

FRP sensor is a diaphragm strain gauge which changes resistance proportionate to pressure changes. The FRP sensor inputs fuel pressure (near fuel injectors) to the PCM. Signal is used by PCM to adjust fuel injector pulse width and meter fuel to each cylinder.

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