When you start talking about catalytic converters it become a nightmarish issue, plus a huge legal one as well. Federal emissions laws state that all motor vehicles built after a certain date pass the federal emissions standards. I can't remember the year exactly but it was in the late 70's in believe. Long story short. You can't just cut it off and then put a straight pipe back in its place. Plus it has O2 sensors either on the upstream or downstream side. Depending a few factors. Check to see how much exhaust is coming out of the tail pipe (restrictions or clogged). Whatever you do? Do NOT try and cool it down when it's that hot. It will cause all the combs inside to break away or shatter (implode) inside the cat and all the internal pieces will clog the muffler up. Then you will need a new cat and muffler. But it sounds like its diffidently and restriction problem. For example; what goes in the engine, must come out. There could be other issue as well but not nearly as likely. The other possibilities are fuel related or you are just running the he11 out of it. I'm sure any local muffler shop could diagnose it very easily. And I'm sure they wouldn't be nearly as expensive as a repair shop or dealership. Hope it helps.
SOURCE: converter recall 2002
http://nhtsa.gov/
You can try this website they have all the info on all the recalls within the last 8 years. Anything after 8 years the recall is voided Hope this works for you
SOURCE: 2001 Pontiac Bonneville SE; Transmission: will not
internal tranny problem what you did will not solve problem find a tranny speciallist
SOURCE: Catalytic Converter 2002 Sonata Replace catalytic
if vehicle has less than 200,000 kms then i think cat is ok ,check the O2 sensors with a automotive meter rather than reading the obdii ,which i cannot do anyway in europe but at least you will know if they work or not their are two O2 sensors on each cat one before the and one after ,unless this is a high mileage vehicle i dont think the cats will be gone
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