thank you very much mohdata ,i learnt a lot from your explanation and this tells me that th eworld has live a bit more because the good people still exists,The thing is that engine is giving a weired sound sometimes at 2000 and sometimes at 3000 rpm.You seems to be right about sensors malfunction andi cant sell the car in this situation.i dont want somebody else to get killed this way and i know i can handle this car in emergency
hopefully i will fix it through dealer
but one thing is clear high temprature of doha can melt anything even its a control system made in japan or Germany.We are paying the price of manufacturers experiments.
thanks again