Car is heating up and I can't figure out why!Help

[90VertGT]

Ok guys I am having a bizarre problem that is really getting under my skin. I am driving around and my temp is between 190-210. I come to a light and it stays about the same. As soon as I give it a little gas from a stop the temp climbs to about 220-250 and then goes back to 210 or so in about 8 seconds. What could be causing this? I am thinking my Autometer gauge is messed up but I’m not sure. It is the only gauge on the car that gets condensation on the inside of the glass so maybe the moisture messed something up? Sticky Thermostat? Let me know what you guys think and what I should check. Thanks.

 

[blkstangman88]

ur thermostat could be sticking, or ur water pump could be goig out, i had the same problem almost