Drain the radiator, undo the top hose from the thermostat housing, take the two bolts holding the housing onto the engine, gently tap it loose and you'll see the thermostat. Just pull it out and put the new one in. Be sure to use a new gasket. Reusing the old one isn't recommended.
inside the radiator hose
where is the vacuum diagram located on 1995 geo prizm
follow the upper radiator hose other end is connected to thermostat housing
yes but do check first because a 1990 Geo prizm is basically a re branded version of a 1990 Toyota corolla.
On a 1990 Chevrolet C20 van, the thermostat is located in the engine compartment, specifically at the engine's intake manifold near the water pump. To access it, you typically need to remove the upper radiator hose connected to the thermostat housing. Once the hose is removed, you can unbolt the thermostat housing to replace the thermostat. Always ensure the engine is cool before attempting this to avoid burns.
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.
The thermostat housing is located at the engine end of the lower radiator hose.
Follow the top radiator hose as it connects to the front of the engine. The thermostat is located in that housing.
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.
Follow the bottom radiator hose to where it meets the block.There is the thermostat housing