What Are the Reasons for High Car Water Temperature and Fan Not Turning?
2 Answers
There are two main reasons for a car running at high temperature with the fan not turning. One is a damaged car radiator fan motor. The other is a blown fuse or faulty relay supplying power to the fan. Both situations require timely replacement of the damaged components. Below is detailed information about car radiators: 1. Overview: The radiator is part of the car's cooling system. The radiator in a car engine's cooling system consists of three main parts: the inlet tank, outlet tank, header, and radiator core. 2. Additional Information: Coolant flows inside the radiator core while air passes outside it. The hot coolant cools down by transferring heat to the air, while the cold air heats up by absorbing the heat dissipated by the coolant. Thus, the radiator functions as a heat exchanger.
Last time I was on a road trip, the temperature gauge suddenly maxed out and the fan stopped working, which made me sweat with anxiety. It wasn't until I pulled over that I could calmly think it through. It might have been a faulty coolant temperature sensor—this component detects the engine's heat and signals the fan to kick in. When it malfunctions, the fan just sits there dumbly. Blown fuses are also a common culprit; those little things in the fuse box can easily burn out, cutting power to the fan. If the fan motor itself is broken or jammed by debris, feeling it warm or hearing abnormal buzzing noises are telltale signs. Loose or damaged relay connections can also prevent signals from getting through. Additionally, aging wiring harnesses causing short circuits or overheating are potential suspects. Don't push your luck—overheating can lead to cylinder scoring or even engine failure, so it's safer to head to a repair shop for diagnosis ASAP. Remember to start with simple checks, like inspecting the fuse box—it's often obvious and a quick fix, saving you unnecessary expenses.
