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On some cars it could, depends on code.
The check engine light would come on and the code stored would refer to a bad cat.
With out knowing what code is stored in the computer, that cannot be answered.
Usual first sign is a check engine light with a code P0420.Usual first sign is a check engine light with a code P0420.
Yes it is. It can damage the engine.
Yes, you can do serious damage to the engine if the converter is clogged.
The engine computer on most vehicles are "smart" enough to not make this mistake.But it is very remotely possible.
Code P0136 is the code set for your O2 Sensor that is located after your Catalytic Converter.
Some symptoms of a bad catalytic converter on a 1994 Lumina are engine stalling, engine backfiring, no start of engine, and poor power pick up. If the catalytic converter has rust holes, the vehicle will also be very loud when running.
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.
Yes, the unburnt fuel from poor timing will enter the converter and slowly destroy it.
A bad torque converter can cause slipping gears. The fuel mileage will suffer as well, and the engine will rev higher.