yea there is something wrong. you should be running 180 at least and more like 190 would be normal. You might have a thermostat that does not fit correctly, or is new and broken.
I had a hell of time finding the correct thermostats - there are two of them, in my 366 powered gasoline engine. I had to go to two stores, no one had two thermostats on the shelf. then there was finding the gasket... that was a third store...... grrrrr