How to Fix a Catalytic Converter Without Replacing It
The catalytic converter is one of the most important parts of your vehicle’s exhaust system. It reduces harmful emissions by converting toxic gases—like carbon monoxide, hydrocarbons, and nitrogen oxides—into less harmful substances such as carbon dioxide and water vapour. Over time, the catalytic converter can become clogged, contaminated, or damaged, leading to poor performance, excessive emissions, and even engine problems. While replacement can cost anywhere from $1,000 to $2,500, there are several ways to repair or maintain it without going through a costly replacement. Signs Your Catalytic Converter Needs Attention Reduced Engine Performance Sluggish acceleration, loss of power, or poor fuel economy may indicate a clogged converter restricting exhaust flow. Excessive Emissions Visible smoke, a rotten egg/sulfur smell, or failing an emissions test can signal contamination inside the converter. Check Engine Light (CEL) Modern cars have oxygen sensors that monitor converter efficien...