Overheating and loss of coolant. 2006 pt cruiser limited edition

What is your question?

Car over heating while driving. Smoke coming from area of water pump. Coolant reservoir bubbling and kicks out all coolant. Under car just coolant on ground not mixture of oil/coolant. No white smoke coming from exhaust. Hear a whining noise when lift hood coming from same area as the smoke. Could this be water pump? Also before started overheating in drive would overheat while idling or when ac was on. Replaced radiator, coolant fan, the sensor and thermometer. Ac is colder then before now but now is overheating. When it over heats it just goes a little over half and you hear the bubbling like it’s boiling. No knocking noise or oil leaks. So doesn’t sound like a cracked block, hoping. Anyone have any ideas. Have to wait two days before can get ahold of mechanic. It’s the weekend.

What makes this problem better or worse?

Ac or in drive. Started with just ac and idling

How long has your 2006 Chrysler PT Cruiser had this problem?

A week