2003 sunfire with 112k shakes when i come to a light i usaley tab it in netrual and it wont shake as bad new plugs changing oil today and puting new fuel filter new fule pump was in stalled 2 mounts ago . any idear what it can be ow ya i also clened the tb with carb cleaner .......... any one got any idear what else it can be ??? i am geting about 250 to 310 dependingon my driving to a tank of gas .