What are the reasons for the engine's high-temperature fan not rotating?
2 Answers
Car water temperature does not meet the requirements, or the relay is faulty, or the temperature control switch has issues. Water temperature not up to standard: Most of today's car radiator fans operate electronically via temperature control. Therefore, the fan usually only starts rotating normally when the car's internal water temperature reaches the required level. If the temperature is too low, the radiator fan cannot rotate. Solution: If the car radiator fan fails to rotate, the first step is to check whether the water temperature has reached the required level. If the water temperature cannot rise, the car engine needs to be inspected. Relay failure: If the water temperature meets the requirements but the car radiator fan still does not work, the problem might lie with the fan's relay. If the relay is faulty, the car's radiator fan cannot operate. Solution: Replace the damaged relay. Temperature control switch issues: Some faults in the temperature control switch can also affect the operation of the car radiator fan, so it is important to check this as well. Solution: Replace the damaged temperature control switch.
I drive a lot, and last time I was really scared when the engine got hot but the fan didn't move. Common causes include a broken or stuck fan relay, or a faulty sensor that fails to send signals, preventing the fan from starting. A blown fuse is also a common issue, so check the engine fuse box. Aging wiring with poor contact can also interrupt the current. After parking, it's advisable to open the hood and manually check if the fan blades are stuck. If they move freely, inspect the fuses; using a tool to measure voltage is more accurate. High engine temperatures can damage the cylinder head gasket and water pump, so get it fixed immediately without delay. During regular maintenance, have a professional shop clean the radiator and test the fan to prevent such problems.
