Temp gauge all over the place - new thermostat?

[94_AcCoRd_EX]

Originally posted by armyguy5
does it go down while your driving and up while your idling or just at random?

It is random. I suppose it could be a gauge problem also, but I'll check the sensor first.

Usually, the gauge will register just fine after the car warms up. I'll be driving and it will slowly move down to cold, then eventually go back up, down, up, etc. Random behavior happens when I'm doing city driving or highway driving.

Thanks for the suggestions Stefan, I'll look into that later today.