touring, non turbo, auto, 100k miles. Car always ran cool, first line on temp gauge. Then car ran at halfway mark on temp gauge, fan at low speed. But when I turn a/c on fan does not speed up to fast cycle, will over heat in city with a/c on. With a/c off car is ok at halfway mark on temp gauge...

Please advise what should be the correct resistance reading when checking the hi/low resistor for the radiator fan 2011 dodge grand caravan i know that it should not reading OPEN Can anyone please check the resistor across the Resistor on a newer, working correctly late model radiator...