You replace it.
there is no drive cycle for a catalytic converter it could be plugged up....
Nothing
The life of your catalytic converter depends on the condition of the engine and the fuel you're using. If the fuel has the wrong additives, the catalytic converter can become plugged up. If the engine burns oil the oil vapor will build up on the catalytic converter and it can become plugged. Otherwise, if the catalytic converter isn't plugged, don't replace it.
Catalytic converter plugged?
Yes, if it is plugged the exhaust can't get out of the engine.
Replace the catalytic converterReplace the catalytic converter
Catalytic converter plugged.
I dont believe it will if the converter is cracked but if the converter is plugged it definetly will.
Replace the catalytic converter.Replace the catalytic converter.
Could be a plugged catalytic converter, plugged fuel filter,
Plugged fuel/air filter? Plugged catalytic converter?
You will fail an emission test and worse case, the engine will fail to run if the cat gets plugged up.