Its easy, just buy direct replacement converters for both sides, make sure you get a right and a left. Direct fit converters are best as they are already welded and formed, I found mine on ebay. Then just follow the directions that come with them, just a few bolts hold them on. Make sure you replace the gaskets as well , mine came with the converters. Then sell your old converters for scrap platinum. Good luck.
A catalytic converter may last the life of the car. There is no set time to replace it.
No, it is illegal to remove a converter and not replace it.
No, if it is clogged the only fix is to replace it.
catalytic converter
Catalytic converters are very expensive. For this reason only replace the catalytic converter if it is defective. If only one of the two are defective replace that one.
On a Lincoln Town Car : Bank 2 is the drivers side of the engine Sensor 2 is AFTER the exhaust has passed through the catalytic converter
The catalytic converter is located about mid-car inline with the exhaust piping. Identifiable by it's heat shield. Jack up and secure the car on jackstands. Under the car you will see the exhaust piping goes into an elongated diamond shaped contraption. This has flanges on both ends that can be unbolted (the bolts often times are spring loaded) and the new catalytic converter be installed. Remember to replace the gaskets.
solenoid or relay switch
Yes, a car can be driven without a catalytic converter. However, it is illegal to drive a car without them because of emissions.
Can? Yes. Should you? No. It is illegal to drive a car that came equipped with a catalytic converter without one. There is no benefit to removing a converter from a modern car.
Catalytic converter.
If it came from the factory with a catalytic converter then it must have one