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Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test S - System Check >> Test S: Step 9
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Test S: Step 9

9) Check EGR Valve  Inspect EGR valve for leaks. If valve is fully closed, go to TEST H, step 1). If EGR valve is leaking or not fully seated, replace or repair valve.