yes a bad catalytic converter can make different problem 1 if is clog is so much restriction the engine don't start or run a few seconds or few minutes and stall if the damage cat is bank 1 and direct fit some pieces reach the [ egr ] valve and can get stuck open and the engine don't start or shakes allot
It is one of many possibilities.
Yes, a bad cat can cause issues.
No.
Yes it does.
Not likely but possible.
Yes, it sure can.
This does not seem to be the cause of a bad catalytic converter. A converter is there to convert harmful toxins into harmful ones and you will know if it goes bad if your gas mileage suddenly worsens or your RPGs are going up but the car does not go any faster. If your car is sounding funny and has an odd smell, then it might be something to do with the heater core.
A clogged converter will cause an extreme loss in power, poor mileage, and hard starting. If it is clogged really, really, bad it may cause the engine to not even start.
It could, yes.
have the car checked out, it could be a bad o2 sensor or a plugged converter.
No. A catalytic converter wont. If its a rear wheel drive, check your drive shaft. Front Wheel drive, CV Joints. Other than that worn steering. Exhaust wont cause this issue.
Yes. Oil is hard on Catalytic converter.