Thank you Scotty: https://www.youtube.com/watch?v=eQpPcdvSBks
My lancer was revving at 2000 rpm+ after degreasing the engine bay. I didn’t have the throttle cleaner spray so I used alcohol wipes, I hope that’s ok? Then used wd40 on the Idle Air Control Valve / cogs and cleaned them with wipes. Its idling perfect now but I might put some grease on the cogs?