I have a 2007 nissan sunny 1.6 with automatic transmission.Whenever the car wants to change gear from 2nd to 3rd it goes to 4k rpm then changes even if i have pressed a little pedal.Another issue is that at very minimal acceleration the the car starts jerking and as soon as i press the pedal its gone , the engine is in very good condition only 1 lac driven it idles very nice cant hear the engine in the cabin at idle. So any suggestions or help ? Location :ISL/RWP