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Integrated Electronic EGR Valve - 1990

  1. Turn engine off. Connect vacuum pump to EGR valve. Apply vacuum and observe EGR valve. EGR valve should not move. If valve moves, 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 valve moves, system is malfunctioning.
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