Nowhere. It attached to the exhaust pipe, not the engine.
The catalytic converter(s) would be found in the exhaust system between the engine and the muffler.
Plugged fuel/air filter? Plugged catalytic converter? Engine timing? Check EGR Valve
You can if you want to but the vehicle won't pass emissions and the check engine light will remain on.
The catalytic converter is behind the engine.
It will be in the exhaust system about half the way back. It looks like a muffler but it will be before the muffler. It is closer to the engine.
I believe there are 3 one in each exhaust pipe exiting the engine exhaust manifolds but before the two pipes join in to one pipe leading to the catalytic converter The third sensor is after the catalytic converter
The catalytic converter is in the exhaust pipe directly behind the engine.The catalytic converter is in the exhaust pipe directly behind the engine.
That depends on the engine and the fuel you've used. If the engine starts burning oil a catalytic converter can fail rapidly. Some fuel additives can also cause a catalytic converter to fail prematurely.
Yes it can
The catalytic converter is found in the exhaust system between the engine and the muffler.
If you're referring to removing the catalytic converter from your vehicle, first off this is illegal. Secondly no modern engine will run properly with the catalytic converter removed. You must have a fully functional catalytic converter in place.
A catalytic converter with holes in it needs replacing. It affects not only emissions, but the performance of the engine. Replace the converter.