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Home >> Buick >> 1980 >> Skyhawk Base, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Computer Controlled Catalytic Converter System C-4 >> Operation >> Engine Sensors & Switches >> Wide Open Throttle Switch (WOT)

Wide Open Throttle Switch (WOT)

This switch is used to detect full throttle condition. When activated, a signal from the WOT to ECM sets a temporary full rich mixture until throttle moves off wide open position. At which time the C-4 system returns to pre-WOT operating conditions. This switch is closed at wide open throttle and opens with 5 in. Hg or more of ported vacuum.