A bad catalytic converter will cause a severely restricted exhaust system. You would notice a lack of power and performance from you vehicle and in cases of a completely blocked converter, the engine may not run.
it is ok to continue driving the vehicle while the catalytic converter is not working properly?
As far as the environment is concerned, yes. Catalytic converters are very important in regulating the amount of pollution your vehicle emits. As far as vehicle performance, removing a catalytic converter could increase horsepower and exhaust flow. Removing the converter can (and does on most) cause the computer to over-correct for the improper oxygen sensor readings. This over-correction usually causes a reduction in power, economy, and running performance. It is also highly illegal.
It is illegal and will cause the vehicle to pollute the atmosphere.
Yes, a bad cat can cause issues.
Yes, a catalytic converter can cause a vehicle to vibrate and stall. It will do this when it gets plugged because it causes the fuel mix to be disturbed.
Yes, illegal, will not help performance, will cause check engine light to come on, ................
One, it is illegal to remove a catalytic converter. Two, if the vehicle is computer controlled, removing the cat will cause a check engine light and a limp in condition which will reduce power.
It most certainly will. A clogged converter will cause a loss of power, poor fuel mileage, and overall poor engine performance. It is illegal to remove it without replacing it with another one. Besides, modern vehicle will not run correctly with the converter removed.
On any vehicle after 1996, YES.
Having no catalytic converter installed is illegal and can cause a myriad of problems. Probably not a backfire though.
Yes, internal coolant consumption can damage a catalytic converter.