I am not completely familiar with the Taurus, but if you follow the top radiator hose (thick one) back to the engine block, the housing should be located at the point where this hose meets the block. The thermostat is located here inside the Thermostat Housing.
this site^ will show you a how
locate the top radiator hose and follow it to the motor, unbolt the housing it is connected to and remove the old thermostat replace it and put it back together
stand at the front of the car and look for the top rad hose and follow it to the end there should be two bolts holding the hosing unbolt and replace the thermostat and gasket
On a 1997 Oldsmobile 88, the thermostat is located at the engine's front, where the upper radiator hose connects to the engine block. To access it, you typically need to remove the upper radiator hose and the thermostat housing. It's advisable to allow the engine to cool before attempting to replace the thermostat to avoid burns.
Look in the removable housing at the engine end of the upper radiator hose.
Drain the water from your 1997 GMC Yukon cooling system. Remove the water supply hose. Remove the thermostat housing retaining bolts. Remove the old thermostat and replace with the new thermostat.
In a 1997 Honda Passport, the thermostat is located on the engine block, near the intake manifold. It is typically found in the thermostat housing, which is connected to the upper radiator hose. To access it, you'll need to remove the hose and the housing cover. Make sure to allow the engine to cool before attempting to locate or replace the thermostat.
The 1997 VW Jetta thermostat is located inside of the thermostat housing. Remove the thermostat housing retaining bolts. Remove the water supply hose. Reverse the process to install the new thermostat.
On a 1997 Ford Taurus : The transaxle ( transmission for a front wheel drive vehicle ) is located in the engine compartment bolted to the engine
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The thermostat is located underneath the radiator hose where it connects to the engine. The thermostat regulates the engine's temperature.