Having some issues!! please help

ok so my car runs like shit when its at normal temp... as im decelerating it just dies out on me... ive tried cleanin the carb wit carb cleaner and seafoam as well... changed the fuel filters...it only helped out a lil bit.. but other then that its always diein on me and i gotta throw it to nuetral and start it right back up.. i was thinkin maybe check the PCV Valve next but i dont know where its located...and also check for vaccuum lines.. does anybody have any other suggestions? or no whats goin on.. id really appreciate it lol thanks