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Hey Scotty my name is William I drive a 2003 Toyota 4Runner shockingly enough it has over 500,000 miles on it my mother was the first owner so I know all the history of this vehicle and I’ve been doing all the maintenance myself for the passed few years and have been driving it for the passed four years now over the past few months I’ve noticed my catalytic converter’s have started to get clogged my fear is it has 4 catalytic converter‘s and are vary difficult to replace, about twice to three times a week I feel the car hesitating and I’ve received the P420 code and p430 I find putting premium gas helps and if there is a hesitation pulling over sand turning off the car and turning it back on also helps extremely i’m trying to do my best without replacing the catalytic converter‘s I have cleaned the mass airflow sensor and I have replaced the air filter of course I was wondering if there any tips you can give me so I can try to fix the without replacing the cats thank you in advance for taking the time to read this
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