What are the causes of Nissan Sylphy cooling fan failure?

[VonAllie]

Nissan Sylphy cooling fan failure may be caused by: 1. Poor motor lubrication: The fan doesn't rotate due to insufficient motor lubrication, preventing the motor from driving the fan blades after installation; adding lubricating oil can solve this issue; 2. Reduced starting capacitor capacity: The capacitor's capacity decreases, resulting in insufficient starting torque for the motor to drive the load; replacing the starting capacitor can resolve this; 3. Prolonged motor usage: Extended use of the fan leads to motor wear. When the motor's bushings wear out, it's prone to burning out. Long-term use also increases the motor's internal resistance, reducing its load-bearing capacity and preventing it from driving the fan blades. Replacing the motor is the solution.