July 2012 I changed my spark plugs I notice the throttle cable was not in the bracket .I made an adjustment to get the engine to idle right.Car ran good. Two months later the car ran rough.I got a print-out from 2CarPros,the first step was to check all fuses.Replaced afuse jcas20 the ran great.Six months later it runs rough again. Had engine lite check. p0123,p0121,p0507,p1529 p0741 came up after scaning. Where should I START? 6CYL. 2.7 LITER