Temp gauge

Well my temp gauge is acting up again.It has been fine all summer but as soon as we got one cool nite it started all over again.It wont work until i pull the PCM fuse for about 15 min then all is fine until the next cold day then the same thing.I have changed the sending unit.ANY IDEAS? and what would cold weather have to do with it?

Try changing your thermostat, It worked for me.

I changed thermostat and temp sending unit.When it doesnt work it doesn't move at all like no power to it if i pull the pcm fuse it works fine after i put fuse back.The puzzling part is it acts up only in cold weather the water temp is fine.