Description
HOW DO I KNOW IF MY CAR OXYGEN SENSOR IS GOING BAD?
The only sure way to find out is with a diagnostic code reader, but here are some indicators:
- Check engine light illuminated due to the sensor registering a trouble code with the engine computer
- Drastically worse gas mileage and performance
- Rough running that doesn’t improve after changing spark plugs and plug wires
- Fouled spark plugs and an engine that runs rich (black smoke, carbon around the tailpipe)
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