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Home >> Jeep >> 1981 >> Cherokee Base, 2D Utility, 4.2L Eng VIN C, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Computerized Emission Control >> Operation >> Data Sensors >> Adaptive Vacuum Switch (AVS)
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Adaptive Vacuum Switch (AVS)

This switch is mounted in a bracket with 2 other vacuum switches on right inner fender panel. The AVS is controlled by manifold vacuum and is normally closed. When closed, this switch indicates an engine idle condition.