The car starts to vibrate a little and seems the engine is working under duress. A far apart cyclical noise "drrrrr" seems to be coming from the rear of the vehicle. Downshifting solves the issue. But once it shifts to 4th gear it starts again and is more pronounced in lower speeds.
Recently done the following:
changed ATF fluid
changed engine oil, oil filter, fuel filter
changed differential (hissa) oils.
rear and front brakes serviced
Wheel alignment and wheel balance done
Would appreciate help in this regard. I am currently based in Lahore.
