Temp Gauge Working Intermittently - Suggestions?

Hi Guys,
My temp gauge does not always work. Sometimes it will stop working while driving and then start working again. The other gauges in the cluster are working fine. What should I be considering first; the gauge itself that's the problem, a ground wire or the circuit board? Is there a way to test what the cause may be?
Thanks


it could be the voltage regulator on the back of the gauge, if your year had one, it could be a bad sending unit. on the block.

But you could also bypass the unit and buy a a/m temp gauge .