What Causes Normal Idle Water Temperature to Rise When Driving?
1 Answers
The reasons for normal idle water temperature rising when driving: 1. Insufficient coolant: Coolant leakage or low coolant level can cause the engine water temperature to rise. If the level is low, first top it up to the appropriate level, then check after a few days to see if the level has dropped significantly. If it has, locate the source of the leak. 2. Faulty radiator fan: When the vehicle is running at high speed, the heat generated cannot be transferred to the coolant in time, affecting heat dissipation. This leads to an increase in coolant temperature, potentially causing overheating. 3. Faulty water pump: Water pump issues include seized bearings and damaged impellers. Seized bearings are relatively rare, while impeller damage, such as cracks or detachment from the pump shaft, is more common. This slows down the coolant circulation, making it easier for the engine to overheat.