2001 Subaru Outback Q&A

2001 Subaru Outback Question: as the 2001 outback warms up it get worse rpmsjump up and down quite abit

rpms drop to 500 maybe lower at stop eng. stumbles when trying to leave a stop then jump up hard and fast in cruise control can will startto slow then rpmswill jump up 1500 or more for car to speed up to set speed -
Answer 1
could be coked throttle body or poss idle air control valve -
Answer 2
Idle Air Control valve is most likely the culprit -