Fixed !!! I have fixed this issue with 1KR 2009 Belta.. It was due to EGR Valve motor stop functioning.. Please also check its connector sometime its wire brake from connector end due to vibration. Changed this motor only it will solve the issue. I had earlier changed plugs/ coils / throttle body cleaning (nothing effect) until this valve is diagnosed and replaced now there is no vibration at all. Thanks Immad