Yes it can
Yes, it can damage the engine.
Yes, you can do serious damage to the engine if the converter is clogged.
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 flashing check engine light is due to a condition that is causing catalytic converter damage. Normal cause is a severe misfireA flashing check engine light is due to a condition that is causing catalytic converter damage. Normal cause is a severe misfire
The heat generated by the converter can back up into the engine and damage it. Cause it to overheat, blow a head gasket or damage the heads.
The catalytic converter
They will not only damage it they will destroy the converter.
If the converter is partially clogged it can cause the engine to overheat which can cause serious problems. Other than that if will not harm the engine.
Fuel/air mixture too rich, engine misfire, or damage.
You can permanently damage the catalytic converter (if fitted) which can be costly to replace.
Yes, internal coolant consumption can damage a catalytic converter.
the check engine light flashing on any car means that there is a very strong miss fire that could damage the catalytic converter.the check engine light flashing on any car means that there is a very strong miss fire that could damage the catalytic converter.