your right its probably not circulating, start it up and let it run and feel for heat in rad hoses and rad. First of all, if it's not circulating the first and foremost would be replace the thermostat. That's most probable. the pump probably working, and then after it runs and warms up , therm should open, and then if all is well check for that leak. After it builds pressure, wherever leak is it will be spurting. for the fan, switch might be faulty, see if it runs if wired right to battery, have fun, ANDY