Originally Posted by
Paul_RS
ISCV is linked to the throttle position sensor, if it's set wrongly it can cause a high idle.
As a check on iscv if you unplug it when idle is erratic and then idle stabilizes it needs a clean if idle stay high as paul says prob tps or vac leak....
I'm having the same issue and thanks to this forum I'd say its narrowed down to incorrectly set tps ....