yes car in Neutral switch one and for idle leave it for 2 minutes then power off and for full throttle same car in Neutral leave it for 10 seconds (book says 5 but i find 10 is more reliable). Switch off ignition between these two calibrations, and ideally put it in P switch on briefly between (if its an auto). Make sure there is nothing in the footwell that can get in the way of the largish bolt that is the end stop for the throttle pedal. if there is carpet or anything in here it makes the idle position move around and it wont like that.