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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

  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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