Now, ventilation is controlled by computer. Personally, I don't think it's as convenient as before. Computer control is prone to problems. Poor contact, air pressure and temperature may cause the torque converter to jump back and forth between oil and gas. You should go to the place where you change gasoline. They should guarantee this kind of recurring glitch. Don't be fooled into changing accessories. Finally, the problems of changing parts and spending money have not been solved.