why does my 2005 pt cruiser 2.4 , not overheat at idle , but overheated driving

What is your question?

car started overheating , and antifreeze boiling out of overflow jug ,let cool down added water drove home changed thermostat and radiator cap, and bleed system it does not overheat will idling fan does come on ,as soon as you drive it starts overheating

What makes this problem better or worse?

driving makes overheat

How long has your 2005 Chrysler PT Cruiser had this problem?

a couple days