IM TRYING TO LOCATE WHERE THE THERMOSTAT IS LOCATED ON THE 3.1 LIT. ENGINE

Find the upper radiator hose follow it from the radiator to the engine Where is clamped to the engine this part is called the goose neck the thermostat is located under this part Usely two bolts hold it on and there is a gasket that needs to be replaced Just make sure you clean off old gasket real good put the right tempature t stat in that should be stamped on it and don;t over tighten the bolts goose necks crack easly you can also use a gasket sealer if you want

Back of engine. Also, please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.