Hello, since I don’t know much more, or I’m not one of the experts, I ask here again what it could be. The temperature of my c20ne goes very fast up or down very quickly. The temperature is strongly oriented to speed or the motor load. Drive 2km a mountain it goes up to 110°C, then I drive down the mountain again it goes below 90°C. If it is outside 5°C warmer it makes itself immediately noticeable to the temperature indicator, also lasts It is incredibly long in winter until the engine gets warm according to the temperature indicator. Conversely, it is now very fast in summer. What could be? Cooler dirty I logically exclude. Thermostat? Temperature sensor? What else? Does anyone have a tip? I would be happy.