It is located at the engine side of the upper radiator hose.It is a little hard to see.The housing is located behind and below the A/C compressor.
Where the upper radiator hose connects to the engine, you will find the thermostat.
The thermostat is located behind the alternator. You can find instructions on Auto Zone's web site.
Find the top radiator hose and follow it back to the thermostat housing, which should be located towards the fron of the engine on the intake manifold.
Follow the top radiator hose to the engine. It goes to the thermostat housing. Remove the 2 bolts in the housing and the thermostat is right below it.
The theromstat is directly under the thermo housing at the end of the top radiator hose.
under the housing where the lower radiator hose hooks to the engine
The coolant temp sensor is located next to the thermostat housing.
I am pretty sure its located under the goose neck that's at the end of the top raidator hose
Under and behind the throttle body.
Where is thermostat on 97 Oldsmobile cutlass supreme 3.1 Liter. How hard is it remove.
If the thermostat has failed it will need replaced.