Aug 08, 2017 · Like this? Nissan SR20DE(T). All cooling systems have a by-pass from cylinder head outlet to pump inlet. That allows coolant to circulate before the T-stat opens. You will see that the hot return from the by-pass is directed on the T-stat’s wax ca. May 11, 2018 · Car problems can put people into great worries. If your car’s lower radiator suddenly blows out cold air instead of hot, it might make you scratch your head. Several things are responsible for the ‘lower radiator hose cold’ problem as there are many components operating collectively to 4.6/5(5).
brand new excellent quality. name: hose egr cooling pipe / hose connector at oil cooler inlet and outlet ** this is one hose, but your system might need to replace . Top radiator hose The thermostat housing is usually on top of the engine near the front. Locating the thermostat. In most cars the thermostat is placed under a housing near the water pump on the cylinder head; the housing is connected directly to the top radiator hose.In a few cars the thermostat is housed near the bottom hose.
The bottom radiator hose should be cold, or maybe warm on very hot days. This indicates that your radiator is operating correctly: it is successfully cooling the hot coolant which is leaving the engine via the upper radiator hose. The thermostat controls how much of this cold coolant is brought into the engine from the radiator, via the lower. Jan 02, 2012 · Installing a new lower (bottom) radiator hose on my 2001 Dodge Dakota, along with a new thermostat. 2001 Dodge Dakota 4.7L - Changing the Lower Bottom .