when my car is stopped on red light with a normal temperature, at normal rpm, idling is shaking or u can say I feels some vibration on handle. This problem occurs on petrol as well cng.
i change its rpm motor, engine wiring, plugs, coil n coils wire, wash its throttle body, set its tappet, change its pcv valve, and one sensor that I don't know the name of that sensor.I think its located on throttle body for (butterfly motion). But doing such things, problem remain same for feeling vibration on handle, I want smooth idling, without vibration.
plzzz tell me the exact solution or points that I can do for this problem.