What does the catalytic converter do and what are signs it is failing?

The catalytic converter cleans your exhaust by converting harmful gases into less harmful ones before they leave the tailpipe. Signs of a failing catalytic converter include a P0420 trouble code, reduced engine power, poor acceleration, lower fuel economy, a rotten-egg sulfur smell, and a rattling noise from underneath the car. A failing converter is often the result of an underlying problem like an engine misfire or a rich fuel mixture, so simply replacing the converter without finding the root cause can lead to repeat failure. Because converters are expensive, accurate diagnosis matters. At Motoro Cars in Miami, our ASE-certified technicians use computerized diagnostics to confirm whether the converter has truly failed and what caused it. We are AAA-approved in Wynwood and Doral. Call (786) 634-2002 or (786) 633-3220 to get an honest converter diagnosis before spending on a costly part.