What is the reason for the Buick Excelle's normal water temperature but the fan keeps running?
2 Answers
It may be caused by a damaged water temperature sensor or the fan control module sending incorrect signals, resulting in the fan running continuously. 1. Symptoms of a damaged water temperature sensor: Difficulty starting the engine when cold, because the faulty water temperature sensor still shows the temperature signal of a warm engine during cold starts, and the ECU cannot receive the signal for a richer air-fuel mixture, only providing the engine with a leaner mixture; increased fuel consumption, unstable idle; difficulty accelerating, even when the throttle is fully pressed, the engine speed does not rise. 2. Purpose of the cooling system: The car radiator, also known as the heat exchanger, is a key component in the car's cooling system. The function of the cooling system is to dissipate excess and unnecessary heat from the engine, ensuring the engine operates at normal temperatures under various speeds or driving conditions.
The fan keeps running even when the water temperature is normal? I often encounter this issue when driving my Buick Excelle, and it's actually quite common. The fan is designed to cool the engine, but if it keeps running while the water temperature shows normal, it indicates a fault in the control system. The most common cause is the fan relay getting stuck in the 'on' position, like a switch being locked; or the temperature sensor falsely reporting a high-temperature signal, sending a false alarm to the computer. Additionally, in Buick vehicles, if the air conditioning is turned on, the fan will automatically run to help cool the condenser. If you don't turn off the AC system, it will continue to operate. Moreover, a short circuit or wiring contact issue can also cause the fan to run uncontrollably. Prolonged fan operation can lead to faster motor wear, severe battery drain, and affect long-distance driving. It's recommended to first try turning off the AC. If that doesn't work, check the relay in the fuse box and try replacing it with a new one to fix the issue.
