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Home >> Pontiac >> 1979 >> Phoenix Base, 2D Hatchback, 3.8L Eng VIN A, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Computer Controlled Catalytic Converter >> Maintenance >> Oxygen Sensor Replacement >> Notes

Oxygen Sensor Replacement: Notes

To ensure proper operation of the oxygen sensor, it must be replaced at 15, 000 miles (1979 models) or 30, 000 miles (1980 models), a maintenance reminder flag appears in the speedometer, indicating the need for oxygen sensor replacement. Replace sensor as follows: