What are the issues if a car keeps overheating?

1 Answers
SamuelFitz
07/30/25 2:05am
Car overheating issues include: 1. The thermostat fails to open or doesn't open fully, preventing the cooling system from switching to the large circulation for heat dissipation when the engine reaches 80°C in small circulation; 2. Insufficient coolant prevents the formation of large circulation for cooling; 3. The water pump's rotation speed is inadequate due to belt slippage or severe corrosion of the pump's turbine blades, leading to insufficient water pumping; 4. Fan belt slippage; 5. Damage to the fan's silicone oil clutch; 6. The fan motor's carbon brushes are worn out from prolonged use, causing intermittent operation due to poor contact; 7. The fan's shroud is damaged, resulting in excessive air leakage; 8. Issues with the fan relay prevent it from engaging or cause it to engage only at low speed but not at high speed; 9. The fan fails to operate at high speed when the engine overheats.
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