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Home >> Mazda >> 1990 >> 626 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Idle Speed Control (ISC) System >> Air Valve

Air Valve

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  1. Remove air valve from throttle body. Blow air through valve from port "A" and ensure air comes out port "B" when valve is cold. See Figure .
  2. Place air valve in hot water (greater than 176°F or 80°C) for one minute. Blow air through valve from port "A". No air should come out of port "B". Replace valve if not functioning as specified.
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