Normally as i understand, car radiator fan, will turn on when temperature gauge shows about half. and turn off if the temperature is cold. My car's fan is working fine until yesterday. My car's radiator fan turns on 24 hours!!.. start engine.. fan turn on!!. Because of this, my car cannot go hot. Engine not smoooth please help.what is wrong with it?? gotta repair this fast. GOING back home town on chinese new year le 
