Yes
Yes
No they do not.
Yes
Yes
I have a 97 Impreza, and it should have 3 catalytic converters, but I took one off, and never put it back on, and my car runs just fine, so my answer is don't worry about it.
Yes, if it came from the factory with a converter.
Catalytic converters do not rattle. If it does it will need to be replaced as it may block the exhaust. Loose heat shield?
Crawl under your Kia and count them.
Cause on that car there is two converters filtering each different kind of elements. You need both of them to comply with the legislation.
Catalytic converters are failing and need replacement.
Cars did not get catalytic converters until 74. Trucks were 81, or 82.
Catalytic converters are expensive primarily due to the precious metals they contain, such as platinum, palladium, and rhodium, which are crucial for their function in reducing harmful emissions. The market prices for these metals can fluctuate significantly based on supply and demand. Additionally, the complex manufacturing process and the need for strict regulatory compliance further contribute to the high cost of catalytic converters.
Catalytic Converters are required in every state and city in the United States including American Fork, Utah. It is illegal to remove them.