Where is the thermostat?

You should be able to find it by following the bottom radiator hose back towards the water pump. The thermostat is located inside the housing at the end of the hose. Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/replace-thermostat

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.