1. Improper Installation: Ensure that you correctly installed the new radiator and relay according to the manufacturer's instructions. Double-check all connections and ensure they are secure and properly seated.
2. Faulty Temperature Sensor: The temperature sensor provides readings that trigger the fan motor when the engine reaches a specific temperature. If the temperature sensor is faulty, it may send incorrect signals to the fan control unit, causing the fan to turn on unnecessarily.
3. Cooling System Issues: Check for leaks, clogs, or air pockets in the cooling system. Ensure the coolant level is correct, and the coolant mixture ratio is appropriate for your vehicle.
4. Electrical Problems: Inspect the wiring and electrical connections related to the fan motor and temperature sensor for any damage, corrosion, or loose connections.
5. Faulty Fan Motor: The fan motor itself may have failed, causing it to run continuously. You may need to test or replace the fan motor to resolve this issue.
To accurately diagnose and resolve the problem, it's recommended to consult a professional mechanic or automotive technician. They can conduct further tests, inspect the cooling system, and identify the root cause of the issue to ensure proper repair or replacement of necessary components.
