follow the top hose off the raddiator back to the engine block there shoukd be a houseing with two or three screws it is under here The thermostat on the 1994 and later 2.3L and 2.4L (Quad 4)engines is located above the radiator outlet pipe in the water pump cover which can be reached from under the vehicle on the passenger side. Note: The bolts are accessible from the top of the engine between the no. 2 and 3 exhaust manifold runners. It may be necessary to remove the engine to transaxle support brace to facilitate removal of the radiator outlet pipe. On all other engines the thermostat is located in the coolant outlet housing on the cylinder head. Some 2.0L OHC and 2.5L OHV 4cylinder engines are equipped with a drop-in style thermostat located in a stamped steel housing mounted on the cylinder head. These models can be identified by a large cap that seals the thermostat housing.
I have one. Want it?
to the left of the right rear tire It'son the front of the gas tank.
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2.3L quad 4 is located under the exhaust manifold passenger side. To replace you have to remove the exhaust manifold.
There is NOT an EGR valve on this engine.
How do you replace an 1994 3.1 Oldsmobile Achieva s radiator?
4x6 in the front 6x9 in the back
If you need to know that. You should not be behind the wheel.
Under the dash on the left side of the steering column/
On my 93 it is under the kick panel under the dash on the passenger side. Fairly easy to get to.
in the exhaust system Very close to the manifold, you should see a wire come out of a large nut, to remove and replace you should have a socket made for this application
Where is the thermostat