Salta fan and low temperature in

Hello, I have a Chevrolet Captiva (gasoline) and shortly after starting to drive (about 5 minutes), I've noticed that the engine fan comes on for quite a while, I think longer than usual. Right at that moment, the temperature gauge on the dashboard suddenly drops to the maximum (as if the car were stopped). Then the fan stops and the needle returns to the normal temperature level. I'm worried because this doesn't seem normal. I would appreciate it if someone could give me their opinion on this. Thank you.

It would be good that you check the thermoswitch that activates the fan, must be installed on the radiator. Find it and check it with a multimero to check continuity.