alright guys.. thnx for your valuable suggestions.. but i got my problem solved....
the radiator was choked up. i got it opened from AKBAR MARKET rwp. it costed me 350 rupees and car is performing absolutly fine....
now i just need to check which tomorrow i will
same thing happened to my coure this summer, its radiator was also choked up.
so before i went to any mechanic i went to that radiator guy, he opened the radiator, i saw the condition and i was kind of happy cause this was causing all the problem......
sooooooooo, it turns out that i am a happy man for now