So, I have noticed that recently, my car's coolant temperature increases briefly 1 notch above normal operating temperature especially when idling and only when the AC is off. The coolant was flushed not long ago and looks very clean. I did burp the system yesterday and it released some bubbles, but the problem persisted. The thing that confuses me the most is why don’t the fans kick in earlier? I verified that they kick in both but only when the car overheats as described above or when I turn on A/C! Isn’t it supposed to kick in based on feedback from the temperature sensor? I checked my car model, and I don’t think it has a dedicated coolant fan switch.
Can it be the thermostat? This particular model has 2 of them! But then again, why wouldn’t the fans kick in in time if the sensor is reading the high temperature?
It’s interesting to mention that I also noticed that it takes a bit longer than before to reach the operating temperature when I first drive it in the morning.
So, in short, the car slightly overheats, fans kick in too late, but when they do the temperature goes down.
Can it be the thermostat? This particular model has 2 of them! But then again, why wouldn’t the fans kick in in time if the sensor is reading the high temperature?
It’s interesting to mention that I also noticed that it takes a bit longer than before to reach the operating temperature when I first drive it in the morning.
So, in short, the car slightly overheats, fans kick in too late, but when they do the temperature goes down.
Jan 21, 2024 at 1:24 PM
