Honda Fit 2008 Hatchback 92000 miles
My 2008 Fit started to hesitate upon acceleration and jerk at 40 mph then again at 60 mph. Went to mechanic who changed spark plugs which were burnt. This problem was fixed but now the car idles rough and shudders or jerks at stop signs and seems as though it is about to cut off. Also shudders when backing up. What could now be wrong?