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Home >> Chevrolet >> 1983 >> Camaro Base, 2.8 1, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Dual Unit TBI >> Operation >> Data Sensors >> Manifold Absolute Pressure (MAP) Sensor

Manifold Absolute Pressure (MAP) Sensor

The MAP sensor is mounted on left side of engine compartment. This sensor is a variable resistance type which has a vacuum hose connected to throttle body. The sensor monitors changes in intake manifold pressure which result from engine load and speed changes. As MAP changes, electrical resistance of sensor changes. ECM uses resistance value of sensor to control injector pulse width.

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