Recently, I discover that my engine will tremble and Vibrate before
I shut off. Problem is, this issue doesnt occurs everytime. More likely
to happen when I turn-Off the Aircon and engine still running. Gear in 'P' and it will
trembles and Vibrates, RPM drops for that few seconds before it
suddenly rev up again to prevent engine stalling.
What could be the problem?
I have my Plugs changed, Engine Oil renewed and Filiter change
as well. Problem still persist. Could it be the sensors issue or
Idling problems? Nothing of this sort happens when Gear is in 'D'