Why Does the Water Temperature Drop While Driving?
2 Answers
The reasons for the drop in the water temperature gauge while driving are as follows: 1. Faulty water temperature sensor; wiring issues; 2. Malfunction of the car's dashboard water temperature gauge. Here are the solutions to address the drop in the water temperature gauge: 1. If the water temperature gauge drops while driving, you can use the elimination method to check. 2. Disconnect the plug of the car's water temperature sensor and observe whether the water temperature gauge rises. If it doesn't rise, it indicates a fault in the car's wiring or the water temperature gauge. If it does rise, it means the water temperature sensor is faulty, and you can visit the nearest 4S store or auto repair center for repairs.
The coolant temperature drops while driving. I have to share my experience. This is usually caused by a faulty thermostat stuck in the open position, allowing coolant to continuously circulate and cool down. It can also happen during high-speed driving in cold weather when the cooling effect is too strong. I encountered this issue before while driving in winter - the dashboard showed coolant temperature below normal, the engine warmed up slowly, and fuel consumption increased significantly. The most immediate danger is heating system failure, leaving you freezing in winter without warm air. Moreover, prolonged low-temperature operation accelerates engine wear. I recommend immediately checking the coolant level for leaks and testing the thermostat's proper opening/closing function. If you're handy, after parking, simply check if the fan is always running. Otherwise, go directly to a professional repair shop - safety first. Regular maintenance like periodic coolant replacement ensures system health and prevents such troubles.
