Hi im new for this forum , hope u people will help me. I recently brought 2003 FB15 new shell (126000KM), after i got it i done all the services including tune up and scan . before 3days ago i got some prob in low speed engine was suddenly cut off with some vibration. but in high rpm i kept engine without cut off any how i manage to took the vehicle in to garage. thing is when i reached to garage problem was vanished. how ever we scan the engine and check the wire harness we didn't found any thing wrong in there and also we check the air flow readings that also normal . is anyone have experience this kind of issue? may be air flow sensor is playing with us i dont want to appear this issue again and stuck middle of the road. if u people have any idea whats going on please advise me highly appreciate that