If the Air Idle Adjust Screw is not tightened all the way, the rpm starts jumping from 1000k-1500k rpm rapidly…



there are a few things that cause that ,i just fixed my gsr yesterday.most common thing is the idle air control valve that is bolted directly into the back of the intake , has 2 hoses running into the bottom of it and an elctrical plug. its bolted in by 2 12 mm bolts. if u wanna knwo how to fix it email .it could also be a bad fast idle valve which is bolted onto the bottom of the throttle body (take it off and shake it and look inside…if it rattles and is broken inside gaet a new one