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Home >> Chevrolet >> 1991 >> Forward Control 7.4 N >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Air Induction Systems >> Turbocharger (4.3L) >> WASTEGATE Solenoid
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WASTEGATE Solenoid

Disconnect electrical connector from solenoid. Apply battery voltage and ground to solenoid electrical terminals. With solenoid energized, apply vacuum to one solenoid vacuum fitting with a hand-held vacuum pump. Vacuum should hold only while solenoid is energized.

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