[Flying Hamster]

Well, the truck started sputtering above 3000 rpm, and then backfired loudly several times and resumed running normally. Cleared the light, it came back, and now at idle it sounds like someone rattling chains in a metal trash can. With the truck off, I can get a similar rattle from the convertor by smacking the exhaust...
Yeah, cat is dead.
Still thinking about the rocks.