I've got 143k miles on my car and it's throwing P0423 & P0433 codes. Also, I took it to a mechanic and he put it on the lift while the engine was running. We heard the rattling noise coming from the rear cat on the drivers side.
Originally Posted by
philosophico
How many miles on your car? Im not buying this, I have 162k on mine and my cat's and o2's are stock. I know they haven't been replaced because on the carfax my car was serviced at a Chrysler dealer by the prior 2 owners.
I pass emission with no problems every year. Is your car throwing codes?