Change a Lumina APV Thermostat
Replacing the thermostat in a Lumina APV does not take a considerably large amount of money or even a long time to fix, but it is an important component in keeping the engine working properly. If a thermostat stops working, it affects the engine's ability to regulate the temperature of the engine block. The end result is the failure of the engine due to warping. This will cost thousands to repair, and depending on the age of the Lumina, it can lead to taking the vehicle to a junkyard.
Instructions
1. Locate the thermostat housing by tracing the upper radiator hose from the radiator to the location where it connects to the APV's intake manifold. The hose connects to the thermostat housing.
2. Remove the upper radiator hose from the thermostat housing by squeezing the two tabs on the radiator hose clamp together with a pair of pliers. With the tabs squeezed together, pull the hose off the thermostat housing.
3. Remove the thermostat housing from the intake manifold of the Lumina by taking off the two bolts that hold it in place. Use an adjustable wrench or 10 millimeter boxed wrench. Lift the thermostat housing off the intake manifold to access the thermostat gasket and the thermostat.
4. Pull the old thermostat out of the intake manifold and place a new one into the intake manifold. Submerge the spring, located on the thermostat, into the radiator fluid inside of the intake manifold.
5. Lift the old thermostat gasket off the intake manifold and put a new one in its place. The gasket must remain dry throughout the installation process.
6. Place the thermostat housing on top of the thermostat gasket and bolt it back into place.
7. Squeeze the two tabs on the radiator clamp together and slide the hose back onto the thermostat housing. Secure the hose in place by releasing the tabs.
