bhaijaan masla hi koi nahin... zingdagi aasaan hai... change ur throttle body with all sensors... cost max 2000 rupees in peshawar... or may be less...
or just change ur IAC VALVE (Idle Air Control) Which is attatched under throttle body... Which controls the acceleration during car is start n stand still... it controls the rpm autometically...
but first try to clean thn valve very finely through petrol or carburator cleaner... n c the setting b4 open it... m dam sure tht it is 100 % jam with rust...
after clean it connect this valve with its original connector by placing it in ur hand n swithed on the ignation n c tht valve is working or not... if not soo its must be jam... or the coil has burned... or the wiring is damaged...
i completely describe u the whole procedure...
do try to clean it first.. it is very simple... but remember pls c the timing of valve b4 open it... ok...