3 Common Catalytic Converter Problems

When something is wrong with your catalytic converter, it will generally cause you a lot of headaches if not diagnosed and fixed. Here are some of the most common problems with the catalytic converter.

1. Overheating – One of the most common issues with the catalytic converter is overheating. When overheated to a certain point, the catalytic converter will fail. In most cases, this will trigger the “check engine light” on the vehicle and the light will stay on, compelling most vehicle owners to take the vehicle to the shop. In many cases, overheating of the catalytic converter is caused by a failing oxygen sensor. The catalytic converter is linked to one or more oxygen sensors in a modern vehicle. The oxygen sensor is responsible for measuring the fuel mix in terms of air and liquid fuel. When the mix is too rich, this can lead to overheating the cat. When an O2 sensor fails, the vehicle may go into an “open loop” scenario where it is not able to provide the right conditions for the catalytic converter. Modern vehicle owners can use an engine diagnostic system to figure out if an oxygen sensor has failed. This can lead to figuring out if the catalytic converter has been “fried” or overheated.
2. Matrix Contamination – Different kinds of situations can lead to contamination of the catalytic converter, in which the elements inside are no longer able to effectively trap carbon emissions. These kinds of situations include coolant leaking into the engine, or a scenario where a vehicle is burning oil and excessive particles end up in the exhaust system. Some experts claim that a lean fuel mix can lead to this kind of contamination.
3. Clogged Cat Situations – In some other situations where the fuel mix is not right or the exhaust system is not working properly, the catalytic converter can become clogged over time. When vehicle owners recognize symptoms and take the vehicle to a shop, the mechanic may not be able to diagnose the catalytic converter without replacing it. This can be an expensive fix. This is an argument for maintaining and observing emission controls on a vehicle ito prevent clogging the cat.

The above situations can cause headaches for vehicle owners. Learning more about the catalytic converter and common problems will help car and truck owners decide how to negotiate repair options with a mechanic shop.

Reference Links: 
1) Article Source: Doityourself
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