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Home >> Oldsmobile >> 1990 >> Custom Cruiser >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Exhaust Gas RECIRCULATION (EGR) >> Integrated Electronic EGR Valve

Integrated Electronic EGR Valve

  1. Turn ignition off. Connect vacuum pump to EGR valve. Apply vacuum and observe EGR valve. EGR valve should not move. If it does, check vent filter for restriction. Replace EGR valve if necessary.
  2. Turn ignition on and repeat step 1). When applying vacuum, EGR valve should not move. If EGR moves, a fault code should be present. See appropriate TESTS W/CODES article.
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