Just an update and maybe my final response to this thread. I replaced the coolant senson but did not fix the gauge jumping around. Decided to pull the cluster out and swap out a new gauge, when I was about to loosen the nut that holds the gauge to board I discovered it was loose. Tighten and and re-install cluster. Temperature gauge is now normal and functioning accordingly. So those of you who notice your gauge jumping around you might want to pull the cluster and check the nut for tightness, by the way the gas gauge was loose also. Thanks for all the inputs it sure made me think to get the job done.
Ben
Glad to hear you got it fixed .
Sometimes it's easy and sometimes .....
NOT SO MUCH
