Re: [Chrysler300] Water Temp and engine bay heat issues

["Warren Anderson" <wranderson@xxxxxxxxxxxxx>]

Back in the day, there was a spring in the lower radiator hose. It was and still is a popular myth that the spring was to keep the hose from collapsing during high cooling load. Fact is that the purpose of the spring was to keep the hose from collapsing but only during the factory assembly line cooling system filling process. 

The lower hose can collapse during on road operation but the reason for the loss of pressure at the pump inlet is flow restriction somewhere and most likely is a plugged radiator. 

The cooling system is maintained above atmospheric pressure for the purpose of raising the boiling point of the coolant. With or without a spring, a plugged radiator can cause a pressure drop at the pump inlet to a point where the coolant will boil and pump cavitation will occur. Real bad situation. .

Warren Anderson
Sedona,AZ

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