This happened today. I was driving on the highway and was preparing to overtake a relatively slow moving truck. I had to downshift to 4th and started to undertake the overtaking manoeuvre, when I felt a sudden loss of power. I was doing about 60-70 kmph on 4th and somehow completed the overtaking manoeuvre. Even after that, the loss of power was evident. I later took to a narrow lane and even on 1st, 2nd and 3rd gears, the loss of power could be felt, even at around 2000-2500 rpm. At one point, the car felt as if it wouldn't move forward even in 1st gear. I noticed that while revving, the usual engine clatter of the MJD disappeared and the engine sounded different. I pulled over to one side and got down. There was no warning on the console. After starting the car again, everything looked fine and the power loss vanished. What could be the reason? Is it something just random or something more serious?