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Home › Nissan-Datsun › 1983 › 280ZX Base, 2.8 H, Standard › Repair and Diagnosis › Engine Performance › System › ECC CEC System › Testing › Component Testing › Oxygen Sensor

Oxygen Sensor

  1. Connect all wiring and battery cables. Start engine and warm to normal operating temperature. Open hood and run engine at 2000 RPM for 5 minutes.
  2. If engine does not run smoothly, check air flow meter, cylinder head temperature sensor, and air temperature sensor.
  3. Accelerate engine several times, then check idle. If not 600-700 RPM in "D" (650-750 RPM for manual transmission), check idle speed control system and vacuum control modulator.
    NOTE: Special ECCS tester is required for idle speed control system check.
  4. Check and adjust timing, if required. Adjust to 21-27° BTDC by turning distributor (loosen bolt first). Accelerate engine several times.
  5. Using a mirror, check that inspection lamp on bottom of control unit goes on and off more than 5 times in 10 seconds with engine running at 2000 RPM in "N".
  6. If so, sensor is okay. If not, check oxygen sensor harness. If harness if okay, replace oxygen sensor.
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