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How many catalytic converters are there in a car?

Catalytic converters are an essential part of a car's emission control system. Each converter is designed to remove specific pollutants from the exhaust gas, including carbon monoxide, nitrogen oxides, and hydrocarbons. The typical car has two catalytic converters, one in the front and one in the rear. The front converter is responsible for removing the majority of pollutants, while the rear converter helps to clean up any remaining exhaust gases. In order to function properly, catalytic converters require a certain amount of heat to operate. As a result, they are usually located close to the engine, where they can reach the necessary temperatures. While they are an important part of a car's emission control system, catalytic converters can also be a source of pollution if they are not properly maintained. With regular cleaning and maintenance, however, catalytic converters can help to reduce emissions and keep cars running smoothly.

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What are the symptoms of bad idler pulleys and a faulty drive belt tensioner?

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