What causes the Teana engine to overheat?
2 Answers
If the engine overheats, it may be due to clogged pipes in the cooling system, prolonged use of old coolant, or a damaged thermostat. Clogged pipes: If the air pump's outlet pipe is clogged, it will cause the air pump to operate under high internal pressure and fail to inflate. The solution is to remove and replace the clogged pipe with a new one. Insufficient or improper coolant: Insufficient or improper coolant cannot effectively dissipate the heat generated by engine components, leading to excessively high water temperature. Damaged thermostat: If you plan to remove the thermostat, you should block the small circulation loop to ensure that all coolant is cooled by the radiator.
I've driven quite a few Nissan cars, and when the Altima's engine temperature gets too high, it's mostly due to issues with the cooling system. The most common problems are insufficient or leaking coolant—you need to check the fluid level regularly to ensure it's within the standard range. If the water pump is aging and can't circulate the coolant properly, the temperature will rise quickly. If the radiator fan's motor fails and stops spinning, or if the belt loosens or breaks, heat will accumulate. A stuck thermostat that won't close is also a major culprit, as it blocks coolant flow. Additionally, a clogged or dirty radiator preventing heat dissipation or a faulty sensor falsely reporting high temperature can cause trouble. Before long summer trips, I make it a habit to clean dust off the radiator surface to maintain proper ventilation. Remember, if the temperature rises, pull over and let the engine cool down—forcing it to run can lead to burned cylinder heads or engine seizure, and the repair costs are sky-high.
