"Sounds like the thermostat is stuck open."
Did it used to?
The PCV valve on a 1996 Ford Escort 1.9L is located between the engine and the radiator. It is near the vacuum hose.
The thermostat connects to the top radiator hose on a 1996 Toyota Corolla. The bottom radiator hose connects to the water pump.
Remove the bottom radiator hose on your 1996 Chevy Lumina radiator. Put a water hose in the top of the radiator. Allow the water hose to run until the water draining from the bottom of the radiator runs clear.
The 1996 Deville drain plug is in the bottom of the radiator close to the bottom hose. It is in a very hard place to reach.
For a 1995 Ford Escort , 1.9 liter four cylinder engine : Follow the top radiator hose from the radiator to the engine The hose connects to the engine cooling thermostat housing ( the thermostat is inside the housing )
There's always a partial vacuum formed in the radiator when the car cools, Presumably your hose was weaker than normal.
get a clue...
just follow the top radiator hose to the cylinder head under the coils... its right there. 3 nuts holding the housing
Inside the thermostat housing at the end of the big hose that goes to the top of the radiator.
There is none. You will need to remove the lower hose.
Follow the top radiator hose from the radiator . The hose connects to the engine coolant thermostat / water outlet assembly bolted to the engine . The engine thermostat is inside the housing
broken water hose, radiator