Should be located in a removable housing at the engine end of the upper radiator hose Drain about 1 gallon of coolant from the radiator Remove this housing Make note how thermostat is installed Clean both surfaces Replace thermostat and gasket Re-install housing Re-fill coolant slowly to prevent an airlock Start engine and look for leaks Run engine to normal operating temperature with heater on Re-check coolant level
inside the radiator hose
follow the upper radiator hose other end is connected to thermostat housing
sell the car
It is quite easy to change the thermostat in your 1990 Cutlass. Remove the thermostat housing retaining bolts. Remove the thermostat from the housing. Reverse the process to install the new thermostat.
Follow the top radiator hose as it connects to the front of the engine. The thermostat is located in that housing.
The thermostat housing is located at the engine end of the lower radiator hose.
1990 Camry 4 cylinder thermostat is located off the bottom intake hose connected to the engine block.
the engine is a v6
== == It's located within the thermostat housing, to the right side of the engine... follow the large rubber tube coming from the radiator and it shall lead you to the housing, which is held in place by two bolts. Warning: if you take the housing off, to replace the thermostat, be gentle with the thermoswitch, and it is also very fiddly to have the thermostat centralised on the housing when you bolt it back on.
on the driver's left side
bottom radiator hose
Follow the bottom radiator hose to where it meets the block.There is the thermostat housing