Toyota
Dodge Durango
 Service Manual
Cooling System » Diagnosis and testing
Coolant-low level aeration

If the coolant level in the radiator drops below the top of the radiator core tubes, air will enter the system.

Low coolant level can cause the thermostat pellet to be suspended in air instead of coolant. This will cause the thermostat to open later, which in turn causes higher coolant temperature. Air trapped in cooling system also reduces the amount of coolant circulating in the heater core. This may result in low heat output.

    More about «Diagnosis and testing»:

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    Cooling system-testing for leaks

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    Radiator cap-to-filler neck seal-pressure relief check

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    Coolant-low level aeration

    Cooling system-deaeration

    Dodge Durango Service Manual / Cooling System / Diagnosis and testing / Coolant-low level aeration

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