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Why isn’t the catalytic converter on my Chrysler 300 working?
My Chrysler 300 just failed an emissions test and the mechanic said my catalytic converter wasn’t working properly. What would have caused my catalytic converter to stop working?
Bonnie Stinson · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Having your
Chrysler 300
fail an emissions test can be a big headache, but tracking down the exact issue with your catalytic converter can help you repair the problem and get your car retested.Here are some common issues that might cause your catalytic converter to stop functioning properly:
- Clogs: Engine oil or coolant can leak into your catalytic converter and clog it up. Have a mechanic check your engine gaskets and fluid lines for leaks.
- Overheating: A misfiring spark plug or leaking exhaust valve can cause a buildup of unburned fuel, which will overheat your catalytic converter.
- Physical damage: Since your catalytic converter sits under your car, it’s possible a rock or other debris caused some cracks or other damage.
Having a mechanic give your car a thorough inspection can help you find the source of your catalytic converter problems and get you on your way to necessary repairs. To help save up for those repairs, download
Jerry
. This
super app
compares coverage from the nation’s top providers to find the protection you need at affordable rates. Jerry drivers save an average of $800+ a year on their car insurance! MORE: How to pass emissions testing
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- Gregory R.
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Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.
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