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Home >> Ford >> 1990 >> Probe LX, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - EEC-IV >> Variable Induction Systems Check >> Intake Air Valve Diaphragms

Intake Air Valve Diaphragms

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With engine off, disconnect vacuum lines from both intake air valves. Apply 10 in. Hg vacuum to each intake air valves. Replace air valves if they will not hold vacuum.