throttle valve synch disconnect hoses from throttle body (2 hoses coming from y shape) disconnect coupler (elect plug , I can send pic to email but not smart enough to do it here) connect vacuum tester hoses to nipples (not yours, the throttle body) (5) set up sdstool referring to sds manual, special tool 09904-4101099565-01010-030 start engine click data monitor warm up engine until cool fan comes on and then goes off click active control click on button to fix isc air volume among 2 cylinders (b sure watrer temp is between 80 100 degrees c (176-212f) (13)check for synch of vacuum between 2 cylinders equalize the vacuum of cylinders by turning each each synch screws and keep it turning at idling speed (yes that s what it said) always set at idle speed (14) if it isn't correct take out screws and clean then and the holes, (turn srews in, counting turns until lightly seated so you can put it back righ