i was having a fluctualting idle a couple weeks ago and didnt know what it was so brought it to the mechanic and they replaced my iacv and that solved the problem..a couple days later i adjusted the idle screw and it made my car quicker but now i keep getting the cel po505..will i have to adjust it back to the stock specs? is to much air making it throw the code? and i cant seem to fine the proper procedure for adjusting the idle screw a link would be great thanks

 

its not driving good

 

you should leave the idle screw at stock. your making your car idle higher