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Originally Posted by djag  I showed the car to roadside mechanic who removed the thermostat valve and topped the coolant. However, later I found that the same problem still persisted. I have given the car for trouble shooting today to the Hyundai workshop. But surprisingly, the mechanic tells me that fixing thermostat valve would solve the problem. I understand that thermostat valve plays role only in cold environment. |
Hi. The thermostat you are talking about is a different one. This thermostat opens up only when the coolant is hot enough thus enabling the engine to reach warm temperature as fast as possible. This value actually blocks coolant circulation in the engine while it is cold and opens up soon after it gets warm.
However, in your case, i guess a different thermostat needs to be replaced - the one which switches on the fan when the half way mark is reached on the temp guage.