Hi, I have Toyota Celica 2002 Manual. The car used to stall when the car was in motion and in neutral may be once in a month and normally during the morning time. I didnt take too much notice thinking may be its cold hence it stalls. I recently have got the spark plugs changed. Since the last 3 days the car stalls specifically when in neutral and my speeds are around 40 - 50KMH. I do notice my RPM meter go extremly down to nearly zero and then the car stalls. It only stalls when in motion, never in a stand still state. I was wondering what the problem could be?