How do I know if I need a new catalytic converter?
How do I know if I need a new catalytic converter? Here are five signs that your catalytic converter might need to be checked out:Rattling sounds under the vehicle. This happens when a catalytic converter has been damaged. Check engine light comes on. Diminished engine performance. Smell of sulfur from the exhaust. Car doesn't pass emissions test. How to replace a catalytic converter in your car? How to replace a catalytic converter DIY with Scotty Kilmer. Catalytic converter replacement in your car (Code P0420). Tips and tricks for changing a catalytic converter in your car and fixing code P0420. DIY...