I have a 1995 Lexus es300 with a 3.0 v6 and 168,000 miles. It is overheating. I believe it is the thermostat that is bad and want to change it out. Can anyone tell me where the thermostat is located on this vehicle? The upper radiator hose goes to the inlet housing w/the cap, that apparently is not it. I can see a hose at the bottom of that housing that goes under the intake manifold but cannot see where it leads to. The lower hose comes up on the drivers side to the side of the engine and looks to possibly be it. Can anyone help me!