My aveo runs great no problems what so ever, just surges on idle. I have cleaned throttle body, new idle control valve, new computer, removed intake for a good look at any vaccum hoses or elboes that may have split, and i cannot find anything. please help. The only thing i notice is the power brakes dont seem as easy as they should be, but they do work bc i pluggd off the booster in the case that it was leaking vaccum inside, and they were even harder. And it didnt help the idle