So I know that in the first post you have replaced your O2, so I did not mention what happened to my truck when my O2's went bad. But I had very similar symptoms imo.
Bogs down under medium throttle - Solved
Scroll to the end of the post for the TLDR version. This is a 1997 FJ80 with 191k and maintenance being up to date, with no known issues with the engine or transmission. This was really weird. I went on a pretty long and rough fire trail for about 5 miles, nothing that was too extreme. I’ve...
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