1997 Kia Sephia Repair Question
check to see if radiator fan is coming on. if not it could be a sensor or a relay or the fan itself. you can test fan by unplugging and applying 12v from battery with a couple wires.
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Check that the thermostat is opening, check the fans are working, are you using coolant? if these are all OK get the radiator checked for blocked core tubes, and get a head check done for a head gasket problem, also ensure that the radiator cap is working and holding the correct pressure.
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