Why Does the Coolant Temperature Become Too High?
1 Answers
Causes of excessively high coolant temperature: 1. Insufficient coolant; 2. Slipping, broken fan drive belt or incorrect fan blade angle; 3. Failure of the fan clutch; 4. Insufficient opening or failure to open of the thermostat valve; 5. Overly rich or lean air-fuel mixture; 6. Engine operating under prolonged heavy load or overload. Methods to handle excessively high coolant temperature are as follows: 1. Immediately reduce speed and, after slowing down, drive the car to a safe area by the roadside to park; 2. Do not turn off the engine immediately. After parking, do not shut down the engine right away because excessively high water temperature can lead to overheating of the piston, cylinder walls, cylinder, crankshaft, etc., thinning of the engine oil, and loss of lubrication. Shutting down the engine could cause some soft metals to peel off, and in some cases, even lead to cylinder sticking; 3. Let the engine idle in place for a few minutes, adjust the air conditioning to the heating mode, set the fan to maximum speed, and open the hood to help the engine dissipate heat. Turn off the engine only after the water temperature has dropped.