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Home >> Lincoln >> 1992 >> Mark VII LSC >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - EEC-IV >> Computerized Engine Controls >> Input Devices >> Barometric Pressure (BP) Sensor

Barometric Pressure (BP) Sensor

BP sensor measures barometric pressure of atmosphere. Variations in atmospheric pressure are converted to electrical signals and sent to ECA. The ECA uses this signal to adjust fuel mixture due to changes in altitude. The BP sensor affects air/fuel ratio, EGR flow and spark advance.

The sensor looks the same as Manifold Absolute Pressure (MAP) sensor, except the tubing nipple on BP sensor is vented to the atmosphere and the MAP sensor is connected to the intake manifold.

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