Vehicle Repair Guides

The sulfur containing fuel turns into hydrogen sulfide. When this type of fuel goes to the engine during the combustion process a chemical reaction takes place.

Why Do Catalytic Converters Fail 3 Most Common Symptoms

Further small symptoms of a bad catalytic converter are.

Symptoms of a bad catalytic converter. Reduced acceleration sluggish engine performance excessive heat under the vehicle dark exhaust smoke the smell of sulfur or rotten eggs from the exhaust. Low engine power check engine light failed smog test and more. Here are five of the most common signs of a bad catalytic converter.

Check engine light turns on usually an illuminated check engine light is the first and only sign of a bad catalytic converter. Black smoke coming from the exhaust pipe may be a symptom of a bad catalytic converter. If there is something wrong with your catalytic converter you ll probably experience one of a handful of indicators.

There are some types of gasoline that contain sulfur. The check engine light one of the most obvious indicators of a malfunction in your car is also one of the indications of a bad catalytic converter. Some of these common giveaways include.

1 sluggish engine performance unless the converter is blocked this is not a fatal error. One of the first symptoms commonly associated with a bad or failing catalytic converter is a reduction in engine performance. What are the symptoms of a bad or plugged catalytic converter.

Your car is not going to stall but it is also not going to operate at peak efficiency. This unit is positioned in the exhaust system just behind the exhaust manifolds and can fail in one of three ways. One of the signs of a bad catalytic converter is the noticeable smell of rotten eggs.

When checked by a compatible device it gives a catalyst fault code which must be decoded with the help of the operating manual. Your vehicle s fuel efficiency drops suddenly. When the light pops on your car s engine control module ecm will also store a diagnostic trouble code often a p0420 code in its memory.

The catalytic converter is built into the vehicle s exhaust system and as a result can affect the performance of the engine if it develops any problems. A catalytic converter is designed to remove harmful gasses from the air.