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New rad new themo new hoses why is the top rad hose hot bottom hose cool?
Wiki User
∙ 16y ago
On my 4.0 L OHV engine the top rad hose gets hot when the thermostat opens , and the bottom hose from the radiator returning to the water pump is much cooler because of the heat given off by the air movement through the radiator reducing the temperature of your coolant. Once your engine is warmed up , as long as your temperature gauge works and displays that the engine temperature is in the normal operating range , that's normal.
Wiki User
∙ 16y ago
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How many radiator hoses does a 1999 ford explorer have?
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