Funny thing happened with the temp gauge when crusin today. I was riding along and it just shot all the way up and stayed at the highest point. I got to my dads house and helped him replace the steering column in his 86 fbird ( that he got by the way for $200) and went back in front and fired the camaro back up and the gauge went back to the same spot. Let it sit for a while and then it went back to the normal level and has been ok ever since. Is the the sign of the gauge going back or the sensor?

Thanks in advance!

Derick