Operating temperature?

I just changed my thermostat because my car was having a hard time staying under 90 degree for the operating temp.

However now it seams it can't reach 90 anymore, it stays at around 75 or 80 ish (can't really tell because of the way the gauge is made)

Car is a 99 cavalier 2.2 OHV automatic

Thanks!

Sounds ok. What is the question?

well...oddly enough somebody already answered the questions on this thread but is answer somehow got deleted....anyways I was asking that just to know what the operating temperature of the car was in normal circustances, that's all.