Ok, this is what happened. car was fine till the other day when the coolant light started flashing and coolant was leaking. I changed the coolant flange on the drivers side and filled it with coolant. Started it and no leaks so I took it for a ride. Car started to over heat. Engine gets hot but no heat out of heater vents. Cooling fan dows not come on and lower radiator hose is cool. I felt hoses to heater core. The one off the coolant flange is hot but other is not very warm. Could there be air in the system? Water pump or thermostat maybe? It was fine till the coolant leak the other day.