Why is the car's water temperature gauge heating up slowly?
1 Answers
Reasons for slow heating of car water temperature are as follows: 1. The water temperature sensor is installed on the engine block in direct contact with the coolant. If the water temperature sensor fails or malfunctions. 2. When the engine ECU detects that the output signal from the water temperature sensor is unreliable, it will intervene and use a substitute value, which is also to protect the engine. 3. This can cause the car's water temperature gauge needle to be unstable, along with difficulties in cold starting and accelerating. The functions of the water temperature sensor are as follows: (1) Measures the temperature of the engine coolant. The electronic control unit measures the temperature of the engine coolant based on this change. The lower the temperature, the greater the resistance, and vice versa. (2) The electronic control unit measures the temperature of the engine coolant based on this change, using it as a correction signal for fuel injection and ignition timing. (3) Based on this change, the temperature of the engine coolant is measured by the electronic control unit. The lower the temperature, the greater the resistance, and vice versa. (4) Based on this change, the temperature of the engine coolant is measured by the electronic control unit, serving as a correction value for fuel injection and ignition timing.
