hi guys got a 5sp 03xr6t ute under heavy acceleration its missing and also missing a bit during normal driving I was under the impression that it was just serviced under 1500kms ago but since ive owned it which was just after the service, it has shuddered from bout 2500rpm and also when idling the revs drop to nearly stalling point I know theres a thousand threads in here with possible solutions just wanting to know if theres anything cheap/easy I can do to help narow it down as im on a pretty tight budget being only 19 any help would be really appreciated