As mentioned, your temperature gauge is working OK. It's normal for the temp to go up a bit when you first shut the engine off, as the fan is no longer turning. As the engine cools down, the gauge eventually drops back to zero.
Yes - I was watching the gauge and it slowly went back down. Got a little worried when it started going up, but all looks good.
~ John in Utah 1946 1/2Ton w/4-speed manual transmission w/1960 235 engine Here We Go Follow in his DITY Bay
- If you think about it, it has been one year ago today!