My 2003 honda crv had it’s cat stolen in 2022. I got it replaced and almost exactly a year later the new cat starts making rattling noises and the computer is running an emissions system code. I get the cat replaced at the same shop and now almost exactly a year later again my cat is rattling.
What could be disintegrating my cats? Is it because my car is burning oil? I’m sick of paying for a new one every year.
if you live in a state that offers direct tailpipe emissions testing you can glean a good amount of info from the results report by way of CarbonMonoxide output vs Hydrocarbon output, that sort of thing. Posting the results on here, with your personal info removed ofc, could help yield some better info. a free DIY kind of compression check can give you some indication on the wear of your piston rings, maybe you are burning oil. burning oil after pulling away from an intersection can mean bad valve seals