The thermostat is going to be located in the raditor. Use extreme caution when taking the raditor cap off to advoid burns from boiling antifreeze. Once the raditor cap is taken off you shuld see the thermostat. Just pull out to remove, or push hard to install.
Follow the upper raditor hose from the raditor to the motor, the raditor hose is connected to the thermostat housing, take the houseing off, the thermostat is under the housing.
u didnt mention what size engine..either way just follow the upper raditor hose from the raditor
Follow the upper raditor hose from the raditor to the top of the engine.Where the upper rad hose ends on the engine is where the thermostat is.
there is a hole in the back of your engine under the exaust manifold. pour water in the raditor. if you get under the car you can see water comming out put it in the whole and hit with a hammer till flush with the engine
bottom of rad you will see a small drain valve
By removing the drain plug in the bottom of the radiator.
You can get that picture from google.com.
your drain on your radiator is on the bottom right hand side
You'll lose coolant.
it should be on the raditor next to the lower hose
Look in at removable housing at the engine end of the upper raditor hose