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Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Engine Controls - Theory & Operation - EEC-IV) >> Computerized Engine Controls >> Input Devices >> Barometric Pressure (BARO) Sensor

Barometric Pressure (BARO) Sensor

WARNING: This page is about a different car, the 1995 Ford Pickup, 1995 Ford F-Super Duty, and 1995 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

BARO sensor measures barometric pressure of atmosphere. Variations in atmospheric pressure (changes in altitude) modify an electrical signal monitored by PCM. The BARO sensor input affects spark advance, EGR flow and air/fuel mixture adjustments by PCM. Sensor input is updated during key-on and wide open throttle applications.

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

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