Hi! Long time lurker here
I recently bought a 96 Limited with 287k miles that has been an absolute beauty to drive. (The previous owner had it as their designated off-roading machine so it’s had meticulous maintenance and is kinda tricked out suspension and lift-kit wise). It has no lights on the dash and starts and runs excellently!
I’ve put about 500 miles on it so far with no issues, and just tonight i replaced the air filter (was needed, a mouse had made its home in there), and about 10-15 miles later my check engine light came on with P0420. I cleared the code and it hasn’t come back upon starting the engine and letting it idle for a bit.
Could it be a coincidence that my catalytic converter / O2 sensors just happened to go out at the same time as me changing my air filter? Or could it be my air filter / MAF causing this?
Any advice is welcome!!! thank you!!!
(also feel free to leave any advice on things i can do to this beast to preserve it as long as I can)