Question about 1997 Dodge Caravan

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Overheats after 5 minutes. Radiator recently replaces.

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Most probably when the radiator was replaced it was not filled properly and you have an air lock in the system preventing water from circulating properly.
Read your owners manual or go a forum on your partcular car there as specific methods of adding coolant to assure no problems. Some systems even have a bleeder.
Other possible problems would be a collapsed hose or a bad thermostat.

Posted on Feb 10, 2012

  • cbseniour
    cbseniour Feb 10, 2012

    If non of the above work, start thinking head or headgasket.

  • dgsturt Feb 11, 2012

    Sounds like an air lock so, as mentioned above, check for bleeder valves.

    Open your heater controls to circulate air from outside, take the top off the expansion bottle and pump/squeeze the bottom hose a couple of times. Run the engine and turn the heater on, see if the coolant level goes down.

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Could possibly be that the radiator wasnt filled properly, or may need new thermostat, could possibly also be the water pump may be fouled and needs replacing.
you already replaced the radiator ,
next check to see if the coolant level is still correct, if the coolant is low refill, if it is already topped off, i would replace the thermostat, and see if that corrects your issue, if it does not then check about replacing your water pump.

Posted on Feb 11, 2012

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