Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1982CITATION V6-173 2.8L VIN X 2-BBLREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSOXYGEN SENSORDESCRIPTION AND OPERATION
1982 Chevrolet Citation V6-173 2.8L VIN X 2-bbl
Oxygen Sensor: Description and Operation
1982 Chevrolet Citation V6-173 2.8L VIN X 2-bblSECTION Description and Operation
The oxygen sensor--mounted in the exhaust system ahead of the catalytic converter--provides a varying DC voltage to the ECM representing the oxygen content of the exhaust gas.
- When the fuel mixture is lean sensor voltage is low--under 0.2 volts--.
- When the fuel mixture is rich sensor voltage is high--up to 1 volt--.
The ECM uses these signals to control Mixture Control (MC) solenoid operation.
NOTE: Voltage signals are not supplied by the sensor until exhaust temperature reaches 600° F.
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.