The reasons for excessive engine temperature include: cooling system leakage or insufficient cooling water; water temperature meter indication is inaccurate or malfunctioning; cooling system has too much scale and poor heat dissipation effect; radiator guard net or radiator core ventilation The channels are blocked by debris, resulting in poor heat dissipation; the water pump and fan belts are too loose or broken. The first thing to deal with when the temperature is too high is to check whether the radiator coolant is normal and whether there are leaks in the radiator, water pipes and various components.