Question about 2005 Dodge Caravan

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2005 3.3 caravan heater only provides heat off idle. Fan sometimes does not come on as well. thermostat was replaced twice in summer for O/H.

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You probably have air pockets in your cooling system. I have fixed a few of them by removing the Coolant Temperature Sensor just behind the Thermostat Housing. They can be kind of hard to get to on 3.3L Engines. Anyway, remove the sensor and pour antifreeze into the radiator until antifreeze pours freely out of the sensor hole. Then re-install the sensor. You may have to top-off the radiator after the sensor is re-installed.

If this does not fix the problem the you could have a bad water pump. Sometimes the stamped-steel impeller on the water pump gets corroded to the point where it cannot circulate the coolant properly.

Posted on Dec 05, 2010

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Sounds like low coolant possible coolant leak/ fan as in radiator fan? they do not run at all times.

Posted on Dec 05, 2010


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