Throttle sticking and erratic idle, high back to normal then gets up to 2k rpm

Here's what we have done

Take down entire intake manifold and cleaned/Degreased everything, including rail, injectors, IACV, MAP, checked all vacuum lines and degreased the throttle body, as well as all lines

Solved the Throttle sticking issue due to gunk on throttle,

Now she just idles fine then once in a while jumps to 2k or 3k rpm

i dont wanna adjust the factory throttle stop screw since its still in the stock position.

Is there a Service or Diagnostic's port that may need grounding or bypassing kinda like a Toyota or Mazda to get the ecu to relearn or reset the base idle properly?

or is there a proper procedure for setting base idle to get the ecu into base idle mode?

here's a pic of the ride
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