If everything else is normal, one way to reduce the engine operating temperature is by changing the stock thermostat to one with a lower temperature rating. This temperature rating is the temperature needed for the thermostat to open which allows the coolant to circulate around the engine.
Flush your radiator coolant and replace thermostat
remove thermostat housing and lower radiator hose from block flush through block.
radiator core could be plugged, cap on the coolant reservoir is not maintaining proper pressure. is water pump working properly!! I would flush system and see if this works, buy a good radiator flush at any auto parts place. you can flush the radiator by adding flush to coolant tank, then put a garden hose in tank and back flush it. as long as you have a new thermostat in, you do not need to take it out!! flush until the radiator is clear. when done add new coolant. I did this to mine when changing intake manifold gasket. and it does not over heat it is fine!! HOPE THIS HELPS YA OUT.
You can drain the coolant from the radiator drain plug and just refill it or you can flush out the complete system including the radiator, heater core, heater hoses, block and replace the thermostat and the refill it back up...........
flush the radiator
One flushes a radiator by draining the radiator, rincing the radiator, and then by adding a new coolant. One should remember that the drained coolant is toxic.
It is easiest to remove the thermostat and drain the radiator by removing the lower hose. Dispose of the coolant properly. reinstall the lower hose and run water from the garden hose through the engine with it idleing until it runs clear. Then remove the lower hose to drain the radiator and reinstall the thermostat with the spring toward the engine. Then fill the radiator with coolant and start the engine up and top off the radiator after the thermostat opens. You should end up with about a 50/50 mixture of coolant and water. Good Luck Joe
The radiator on a 1995 Saturn is flushed by draining the coolant, refilling the engine with water, and adding a flush. It is allowed to circulate and drain before refilling with coolant.
the hoses leading to and from your radiator might be clogged. If you had a rusty radiator, the rust may have clogged the hoses that carry the coolant. you should check all your hoses and even flush them out.
There's a plug at the bottom of the radiator... usually on the passenger side. You unscrew it, and you can run a garden hose into your radiator fill to flush out the remaining coolant.. you do this while the vehicle is running, so that the thermostat will open up and cycle coolant (and the water you're flushing it out with) through the system.
coolant in engine enters radiator at the bottom, goes up thru radiator and exits radiator at top. i would think your radiator is clogged up try a good,(expensive) radiator flush to see it that fixes proble,
The valve you're referring to is the radiator petcock. If yours is equipped with one, it will be 2-3 inches from the bottom of the radiator. It looks like a bolt sticking out of the radiator. Remove this and your coolant will drain away. If not, just remove the lower radiator hose and proceed that way. *Remember when flushing out your cooling system, in order to do a complete flush, you must flush in the opposite direction of internal radiator flow. For a down flow radiator (metal fins run vertically), flush from the bottom up, with the cap in place allowing all the coolant and sludge to exit from the upper radiator hose until clear water comes out(best with radiator removed). In order to flush out your engine block, disconnect the radiator upper and lower hoses and remove thermostat and reinstall thermostat housing. Attach water hose to upper radiator hose and flush engine until clean water flows out of the lower radiator hose.