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Continuation article on catalytic converters…

May 28th, 2009
Part-2 continuation post from yesterdays ‘Cat’ post. On 1996 and newer vehicles that have On Board Diagnostics II (OBD II), there is a “catalyst monitor” that monitors the operating efficiency of the converter. A second oxygen sensor is mounted behind the converter to compare oxygen levels in the exhaust before and after the converter. Under normal operating [...]