08 nytro . 84 code and slow to come back down after acceleration intermittently

[Mershey]

My 08 nytro has been throwing 84 code . I’ve checked throttle cable and done the diagnostics everything checks out 16-98% smoothly . Has 1/8” gap at bar. I know how to bypass the tors in a pinch but rather have it working ! And every so often it does not idle down as fast as it used to and it will throw the 84 code hoping someone has came across similar issues thanks !