What are the hazards of excessively low engine temperature?

[GabrielaRose]

The hazards of excessively low engine temperature are: 1. Excessive heat dissipation from the cylinder walls, leading to reduced gas pressure in the cylinders, increased fuel consumption, and decreased thermal efficiency; 2. Unburned gasoline entering the crankcase, causing damage to components; 3. Increased viscosity, resulting in poorer lubrication and greater wear on the bearing shells. The causes of excessively low engine temperature are: 1. Malfunction of the radiator shutter; 2. Thermostat failure; 3. Faulty coolant temperature sensor. The solutions for excessively low engine temperature are: 1. Check if the fan blades are operating normally; 2. Inspect the coolant temperature sensor and its circuit for short circuits or open circuits; 3. Verify if the thermostat is malfunctioning.