Bad Gas milege
Gives a rattling sound if it breaks down
Car stops running if it is totally blocked
replace sensor,catalytic converters smell like rotten eggs when going bad
There's no possible way to pass inspection with a bad catalytic converter, if if you find out you have a bad catalytic converter during your inspection you have a chance after you after you have replaced the catalytic converter and the inspection no no charge/free!!
No, the catalytic converter is downstream from the EGR valve so it has no effect on it.
Transmission torque converter or an exhuast catalytic converter?
A bad coil can damage a converter. If the engine is misfiring, it will cause raw fuel to get into the converter and that can cause failure.
A bad catalytic converter can cause hard starts if it has become clogged. This produces excessive back pressure in the engine.
Loss of power, poor fuel mileage, converter gets red hot, possibly check engine light will come on.
have it scaned by a snapon computer it will tell the bad one
Yes. If a coil is bad causing one or more cylinders to not fire, this allows raw unburned fuel to enter the catalytic converter, where it is burned. This can ruin a converter.
Yes it is possible.
No.
Yes it does.