At what temperature does the Roewe 550's fan start working?
2 Answers
Normally, the fan of the Roewe 550 starts working at around 95°C. Here is more information about the car's cooling system: 1. The car's cooling system is divided into a large cycle and a small cycle. When the engine is cold and the temperature is low, the engine operates in the small cycle first to reach the working temperature of 90°C as quickly as possible. 2. When the temperature rises to the normal level, the thermostat opens, and the large cycle starts working. The coolant begins to pass through the radiator, and the temperature drops by 1°C–2°C. When the temperature rises again to 90°C–94°C, the fan starts rotating at a low speed to dissipate heat. 3. When the temperature further rises to 96°C–102°C, the fan switches to high-speed rotation for heat dissipation. The above process takes only 15–20 minutes at idle, and the time is even shorter during normal driving. Therefore, a trip of 30–50 kilometers is sufficient. In winter, if the vehicle is parked for 7–8 minutes, the engine temperature will drop by at most 10°C.
I've been driving this Roewe 550 for quite some years. Generally, the cooling fan kicks in when the water temperature reaches between 95°C to 100°C, depending on road conditions and weather. During summer traffic jams, I often notice the temperature gauge climbing to around 97°C before the fan starts buzzing to help dissipate heat and prevent engine overheating. If the fan fails to activate in time and the temperature soars above 105°C, it becomes dangerous - risking cylinder head cracks or cooling system damage. I remember last year during a road trip, the temperature hit 99°C on the highway with no fan response. I immediately pulled over and found the coolant was low. After topping it up, everything returned to normal. For maintenance, I recommend regularly checking both coolant levels and the fan relay - aging components can cause issues. Monitoring water temperature is crucial, and making it a habit can prevent major repairs. Overall, the fan operates automatically, but try to avoid it running too frequently or too infrequently to maintain its lifespan.
