I've noticed this a few times in the last few weeks. On dead cold start (over night) everything is fine. I'll drive the kids to school and then come home. The car sits from 9:00am until 2:30pm. When I get in the car and turn it on, the temp gauge shows no reading (cold). The rad fan will then turn on full blast and stay that way. I drove 15 miles and the fan didn't turn off. The car warmed up no problem. I turned the car off and then restarted it and the issue went away.
Whats the deal?