Hi, I have had my car for a total of 8 years so far. It was bought used, in perfect condition in the beginning. Years passed and I have gained many problems down the road. First, the valve had to be replaced, spent a little under $1K, car worked well, until it started leaking coolant. Second, the car started to jerk back if you were passing at least 60mph. You go above 65-70, the car would jerk back to where it felt as if the whole bottom of the car fell off. You could press the gas pedal and it would barely go, it felt as if you were pushing the car with your own hands from the back, as if it lost power to move forward. Third, why does my coolant leak? Why is it that I have to put coolant in it at least every other week? The fan is EXTREMELY loud as well, as if it's overheating.