How do I know if my AC needs recharged?
How do I know if my AC needs recharged?
How do I know if my AC needs recharged?
How do I know if my AC needs recharged?
Why does my AC not blow cold?
So first of all, an oxygen sensor, the old school ones that have been around for a very long time, they change voltages based on the amount of oxygen in the exhaust. So typically below half a volt, the system's lean above half a volt, the system's rich.
Typically it would be because you have an engine misfire and when you have an engine misfire, you can very quickly overheat the catalytic converter.
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