The Catalytic concertor smells like rotten egg throughout the exhaust system or rattling from underneath your vehicle .
Catalytic converter failure.Catalytic converter failure.
Catalytic converter failure bank one.Catalytic converter failure bank one.
Catalytic converter efficiency failure bank 2.Catalytic converter efficiency failure bank 2.
It can, if the substrate breaks free from inside the body of the cat, it can block the outlet pipe. If the exhaust can not get out, the engine will stall.
"Cat back" does not include the catalytic converter.
Depending what vehicle and year you have, if the cat was failing on a 1996 or newer GM vehicle it would light the "check engine" light.
Symptoms
If the cat is plugged up you would have a lack of power. If the insides of the cat are broken up you should have a check engine light come on. The post cat oxygen sensor would detect the cat is not doing it's job and set a code.
Hard starting, loss of power, poor fuel mileage are symptoms of a clogged converter.
Bank 2 catalytic converter efficiency failure.Bank 2 catalytic converter efficiency failure.
There are two (minimum) in the exhaust systems on late model cars and light trucks. They are installed before and after the catalytic converter as the gas flows through the system. Thus pre and post "cat" (Catalytic Converter)
Bank 1 catalytic converter efficiency failure.Bank 1 catalytic converter efficiency failure.