From a failing oxygen sensor to rusted spark plugs, there are several reasons why a catalytic converter may not be working. At Auto Specialty of Lafayette, Inc., we have expert knowledge and years of experience in diagnosing and repairing catalytic convertor issues. We’ve found that many of the problems below are responsible for failed catalytic converters, especially in vehicles that have more than 100,000 miles. Keep reading to learn more about what may be causing these problems.

Why Is My Car's Catalytic Convertor Not Working?
Inconsistent Car Maintenance

If you don’t keep up with regular car maintenance, you can be risking damage to your car’s catalytic converter. Along with getting an oil change every three months or 3,000 miles, you should bring your car or truck into Auto Specialty for regular maintenance. We’ll evaluate and replace or repair the following parts or systems:

  • Spark plugs
  • Air filters
  • Fuel filters
  • Fuel system
  • Engine fluids like steering, brake, coolant, antifreeze, and oil

Too Much Fuel in the Exhaust

If fuel leaves the combustion chamber unburned, it will find its way into the exhaust system. When it reaches the catalytic converter and then burns up, it can cause major damage, heating the convertor way above normal.

Failed Oxygen Sensor

When an oxygen sensor fails, this can lead to incorrect readings of exhaust gases. Your engine computer will not be able to set the correct air-fuel ratio, resulting in an overheated catalytic converter. It can also lead to lower fuel economy, higher emissions, and damage to other areas of your vehicle.

Engine Fluids in the Exhaust

If oil, antifreeze, or coolant finds its way into the exhaust system, it can block air from moving freely, resulting in carbon deposits filling up the catalytic converter. This can create two different problems. First, the carbon deposits will not allow the catalytic converter to reduce harmful emissions. Second, these same deposits clog the catalytic convertor and block exhaust from flowing out. This causes heat and exhaust to back up into your engine, leading to irreversible, and expensive damage.

Schedule an Exhaust System Appointment Today

If you have noticed any of these issues in your vehicle, then you need to schedule an appointment to have your catalytic converter and exhaust system checked out. Contact us today at (765) 477-7300 to make an appointment. We serve Attica, IN, and all surrounding areas with our brake services, diesel repairs, wheel alignments, tire repairs and replacements, and many other vehicle repairs. 

Source: “Reasons For A Converter Failure.” Web article. Bob’s Muffler. Web. 08 Oct. 2021.

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