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Home >> Oldsmobile >> 1980 >> Cutlass Calais, 5.7L Eng VIN R >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Computer Controlled Catalytic Converter System C-4 >> Maintenance >> Oxygen Sensor Replacement >> Notes
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Oxygen Sensor Replacement: Notes

Every 30, 000 miles (15, 000 miles for Cadillac), a maintenance reminder "flag" appears in the speedometer face, indicating need for oxygen sensor replacement. Replace sensor as follows:

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