Oxygen Sensor: Service and Repair

1984 Chevrolet Corvette V8-350 5.7LSECTION Service and Repair

Fig. 6 Oxygen sensor replacement:





The oxygen sensor should be removed when engine temperature is above 120° F to prevent damage to threads in exhaust pipe or manifold.
1. Disconnect battery ground cable.
2. Raise and support vehicle.
3. Disconnect inline electrical connector, then remove oxygen sensor using a suitable wrench, Fig. 6.
4. Reverse procedure to install. Apply suitable anti-seize compound to sensor threads and torque sensor to 30 ft. lbs.



RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.