The Thermostat is inside the goose neck, just follow the hose from the radiator to the goose neck, unbolt the goose neck. Look inside the goose neck and you will find the thermostat.
http://youtube.com/watch?v=DrCSJpbDCiI
It's under the compressor off the lower rad hose
Yes, there are 4.
It is in the fuel tank.
124 h.p
To change the thermostat in a Saturn SL2, start by draining the coolant from the radiator. Next, remove the thermostat housing, which is typically secured by bolts, and take out the old thermostat. Clean the mating surfaces, install the new thermostat in the correct orientation, and reattach the housing. Finally, refill the cooling system with coolant and check for leaks.
Clean the throttle body
1993 Saturn sl2
Follow the top radiator hose to the engine, what that mounts to is the thermostat housing, remove this and there is your thermostat. * ** *** **** ***** Actually, on my 1997 SL2, the thermostat is on the bottom radiator hose. I would check the "Saturn Thermostat Pictures" link below, which also has installation and removal instructions.
http://youtube.com/watch?v=EiGPM5csf5I
Start by replacing the Engine Coolant Temperature Sensor
Inside the fuel tank.