Hello Scotty first I love you videos. I have a 2001 Toyota Tacoma 2.7 auto. Seems to lost power and has the 420 code. I just installed a new motor the old one had around 350000 on it. I have changed both o2 sensors and still same issue. I also have two pic of trends from o2 sensors. My guess is one or two of converters may not be working correctly. I can send the pic To you if you have a direct email or phone. Thanks for help
Have you tested the exhaust system for excessive back pressure (clogged catalyst)?
https://www.youtube.com/watch?v=qJTmddbOxMk
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You should post your photo here. Scotty doesn't have time to answer everybody.
