Help Auto. Trans.

Hey guy's my auto. trans. is screwing up! i am quite furious! It will not get into 3rd or 4th gear. It downshifts when I stop and crap...but it will not get past 2nd! My car is also equipped with the HKS ALC, but I have removed that and the crap is still all fuckedified! Any help would be hugely appriciated!

Thanks!