What are the reasons for the Nissan Sylphy radiator fan not working?
3 Answers
Nissan Sylphy radiator fan not working reasons are as follows: 1. Poor motor lubrication, causing the motor to be unable to drive the fan blades after installation, motor lubricating oil should be added; 2. The starting capacitor capacity becomes smaller, resulting in a reduced starting torque of the motor, which cannot carry the load, the starting capacitor should be replaced in time; 3. The motor has been used for too long, the motor is worn out, the internal resistance of the motor increases, the load-carrying capacity decreases, leading to the inability to drive the fan blades to rotate, after the motor shaft sleeve is worn, the motor is easily burned out, the motor should be checked regularly, and replaced in time if wear is found.
I also encountered the issue of the fan not spinning when I used to drive a Nissan Sylphy. I remember it happened during a traffic jam on a hot day when the temperature gauge suddenly shot up to the red line, which scared me into immediately turning off the engine to check. I found the fan completely motionless, and after towing it to the repair shop, the mechanic diagnosed a faulty relay and also replaced a blown fuse. The Sylphy has several common causes for fan system failures: first, a malfunctioning temperature sensor that fails to accurately detect coolant temperature; second, aging wiring causing a short circuit or blown fuses; third, the fan motor itself seizing up or burning out; fourth, a faulty control module. If not addressed promptly, it can lead to engine overheating and cylinder scoring, which cost me several hundred dollars to fix. Since then, I check the fan operation every six months, making driving much more worry-free.
Having worked in auto repair shops for many years, diagnosing a non-functioning radiator fan isn't difficult. Common failure points for Nissan Sylphy include: blown fuses (located near the battery box, can be checked yourself); damp or seized fan motor (test resistance with a multimeter); control module issues causing signal loss or inaccurate coolant temperature sensor signals; and relay contact burning or sticking. These can all prevent the fan from starting, leading to higher engine temperatures. DIY suggestion: try removing and reinserting fuses first - it's time and cost effective. For professional repair, use diagnostic tools to troubleshoot. Sylphy parts are readily available - motors cost around 200 RMB to replace, but delaying repairs can double engine overhaul costs.
