Hi and thanks for using 2CarPros.
If the fans are coming on when it is cold, make sure the engine is actually overheating and there isn't a coolant temperature sensor issue. If the sensor is bad, it could turn the fans on and indicate overheating when it really isn't.
Fill the coolant and see if you can identify any leaks. Also, make sure it is actually over heating. I can tell by your comments, you have a good idea what to check.
Here are a few links you may find helpful:
Let me know what you find or if you have other questions.
Sunday, December 30th, 2018 AT 3:35 PM