What is the reason why the car water temperature can't go up to 70 degrees?

The reasons are as follows: First, there is something wrong with the vehicle throttle and the engine idle speed is too low. Second, there is something wrong with the vehicle water temperature sensor, and the accurate water temperature cannot be obtained. Third, too much vehicle coolant will also lead to such problems. Generally speaking, the owner needs to check the throttle of the vehicle first. An important inference basis for judging whether there is a problem with the throttle valve is whether the idle speed of the vehicle is stable. If the idle speed of the vehicle is relatively stable, then basically there will be no problem with the throttle. If there is something wrong with the throttle of the vehicle, then the idle speed of the vehicle must be high and low. Secondly, check the vehicle water temperature sensor and open the vehicle fuse box to see if there is any problem with the vehicle water temperature sensor fuse. If there is a problem, the vehicle may falsely report the water temperature. The water temperature was normal, but it was reported to the owner that it was low. Million car purchase subsidy