What Causes High Coolant Temperature in the Teana?
2 Answers
The reasons for excessively high coolant temperature in the Teana are: 1. Insufficient coolant: Coolant leaks or low coolant levels can cause the engine temperature to rise. 2. Inadequate heat dissipation: During high-speed operation, the heat generated cannot be promptly transferred to the antifreeze, affecting cooling. 3. Component detachment: A cracked impeller or an impeller loosened from the pump shaft can slow down the coolant circulation. 4. Poor radiator performance: Prolonged use of water as a medium can cause rust buildup in the engine and radiator, impairing heat dissipation. Recommended measures: When the engine temperature is too high, avoid shutting off the engine immediately. Keep the engine idling for a while, turn on the heater to assist cooling, and open the hood to help dissipate heat. Only turn off the engine after the coolant temperature has dropped to a normal level.
I've been driving my Teana for several years, and last time the water temperature suddenly spiked, which gave me a scare. It might be due to insufficient coolant from a small crack leaking, or the radiator being clogged with accumulated dust preventing heat dissipation; the fan not spinning could also be the issue—check if the wiring connections are loose; a broken water pump could affect fluid circulation; or the thermostat might be stuck open, causing temperature to go out of control. That time, after I parked, I found it was a thermostat issue, and replacing it solved the problem. Ignoring high water temperature can lead to engine overheating, smoking, and damage to the cylinder head gasket, resulting in higher costs. So, if you see abnormal readings on the dashboard, pull over immediately to check the fluid levels.
