my fan not working thought check aux fan switch on top of rad hose..well moved it some COLD water came out ..when wiggled the hose no leak ..only when i moved which i thought the aux fan switch ..that hose not hot at all..rest of rad hoses where...may be the sensor is not reading hot that is why the fan will not come when AC is running at stop ang go traffic..have to turn off when not moving...question also that comes up how come water is not hot....all that has been replced from water pump,,hoses...fan belts..themstat..any help wud be helpful