Gauges and Odometer

I have a 1995 Chevy Blazer with over 213000 miles.
When I went to drive the vehicle the other day, I noticed that my speed odometer, RPM odometer and gas gauge did not move or work, however the temp gauge works but does not stay in the the reg normal range, however the car does not overheat … and runs fine except the gauges do not function, This has happened to me twice. After I arrived at work, I noticed the the gauges began to function normally.