over heating

Can someone please help. I am having trouble. It started out as a small leak. then started over heating. I changed thermostat and intake gasket, now it still runs hot, and blows cold air. No there is no oil in the coolant, and no coolant in the oil. I can figure out what it is. Changed water pump about 30,000 miles ago, and it seems fine. I can not figure out what it is. Its a 99 g/a 3.4 V6

There is probably an air pocket in the cooling system.

Maybe one of the hoses is clogged