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Home >> Geo >> 1991 >> Prizm LSi, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - System/Component Tests >> Idle Control System >> Air Valve
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Air Valve

With engine temperature less than 140°F (60°C) on Prizm or 176°F (80°C) on Prizm GSi, air valve should be open. With engine at normal operating temperature, air valve should be closed. Replace air valve if defective.