Hey guys, my 02 sable has been acting jumpy and low on power. I pulled over while driving it recently and noticed the rear bank of the engine's cat was glowing red. I can feel the exhaust out of the tailpipe but i'm not sure thats conclusive of anything. Its for sure low on power and I have codes p0301 p0316 and p0305 all relating to a misfire. Mainly i'm just looking for an opinion on the situation. I know I can take the cats off and run some light through them to check but its all rusted and looks like doing that would take about a year off my life lol. Another thing is that while I was doing some other maintenance I accidentally cracked the little plastic guide piece for the cruise control cable. So anytime I got the rpms passed 2500rpm it would get stuck and i'd have to lay on the brakes to get the car to sit still so I can turn it off and unlodge the cable. After about a month or two of driving like that I had a moment of lucidity and realized I could just unhook the cable. Can anybody confirm my suspicions because i'd be annoyed to take it off and realize they are fine. I was told the unmonitored third cat is not likely to go bad but the warm up cats do. Does anybody know any places or websites where I can find the best priced converters for my 02 sable? Maybe I should change my fuel filter while i'm at it just in case. PS: I bought the car secondhand and there was a ton of receipts of work getting done but I don't see any for cats/exhaust. Car has 145k on it. Any help is appreciated.