What are the reasons for high oil temperature and high water temperature in BMW e90?
1 Answers
BMW e90 high oil temperature and high water temperature may be caused by the following reasons: Lack of coolant: Insufficient coolant in the engine cooling system, possibly due to leaks in the engine, such as water pump leakage, pipe damage, or radiator damage. Thermostat failure: A faulty thermostat in the engine cooling system leads to high water temperature. Because the thermostat cannot open, the flow of coolant inside the engine is obstructed, resulting in excessive coolant temperature. Cooling fan failure: The cooling fan in the engine cooling system is not working properly, leading to poor coolant heat dissipation, illuminated water temperature light, and excessive coolant temperature. Water pump failure: The water pump in the engine cooling system is malfunctioning, causing poor rotation of the water pump, which results in poor coolant flow, illuminated water temperature light, and excessive coolant temperature.