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What is the method for testing a thermostat?

1 Answers

VonAlexander

07/29/25 9:45pm

Thermostat testing method: 1. Observe whether the coolant is sufficient; 2. Check the changes in water flow and temperature after the water temperature rises: In the early stage of engine operation, the water temperature rises quickly. If the water temperature gauge indicates 80 and the heating speed slows down, it indicates that the thermostat is working normally. If the water temperature continues to rise rapidly and boiling water suddenly overflows when the internal pressure reaches a certain level, it indicates that the main valve is stuck; 3. Check the water flow after starting the engine: Open the radiator filler cap. If the coolant in the radiator is calm, it indicates that the thermostat is working normally. Function of the thermostat: Automatically adjust the amount of water entering the radiator according to the temperature of the cooling water, change the circulation range of the water, adjust the heat dissipation capacity of the cooling system, and ensure that the engine works within a suitable temperature range.

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