A catalytic converter with holes in it needs replacing. It affects not only emissions, but the performance of the engine. Replace the converter.
Depends....clamp or weld.
no
A shop can cut the bad converter out and weld a new one in.
A bolt in or a weld in.
Depending on the year, make and model you can probably purchase a bolt in or a weld in cat.
A muffler shop can weld a new one in for you & is the cheapest place to get it done.
The converter assembly is a bolt on part, or you can cut out and weld in generic units to replace the existing ones.
You can go with a bolt on (more money) or a weld in (less money)
Assuming you mean Catalytic Converter, your local auto parts store should be able to get you either a bolt in type or a weld in type.
Requires welding like a muffler. If you can weld, cut off the old one & weld in the new.
Cut off the old one and weld a new one in its place.
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.