Coolant boils, over heats, not the head gasket or water pump. Had some wet on passanger carpet. Hear liquid swishing????

check water pump new doesnt mean it cant be defective check belt for proper tension if good check thermostat for proper function also check cooling fan for proper working order if good than possible head gasket blown or warped head

Possibilities:- Have you tried inside the car, is the carpet wet under the dashboard (Heater matrix leaking) Is the exhaust steaming, dripping excessive water (Head gasket). Coolant cap not sealing, allowing coolant to boil away. System needs to be pressure tested.

Need to have the system pressure tested, Check oil to see if there is a brown sludge in the oil filler possible head gasket? and its boiling it in a cylinder, check carpet under dash on transmission tunnel if wet (heater leaking) Is the coolant cap seal OK (not pressurising and boiling the coolant away). That give you some ideas to go with.

water pumps do not boil but engine coolant systems do from lack of water . Water pumps leak and get bad bearings but the heat comes from blocked radiators-blown head gaskets--cracked heads --fans not working and the vibration is from pistons and rings trying to bind up in the cylinders from over heat situation

2 blocks is fast to reach boiling.Take the cap off the overflow tank and fill it right to the very top with coolant.Start the car and watch for a steady stream of bubbles.If you see a steady stream you do need a head gasket or have a crack somewhere in a combustion camber.

Losing coolant can be attributed to a few things. Can be a leaking water pump. Does the area below the water pump look damp? May be a seal failure. Could be a leaking hose. Do you have any wet spots under the car after you are parked? May be a leaking heater core. In the passanger side footwell carpet damp? Do you smell a sweet odor? Or could be a head or manifold gasket. Check your oil. Is it cloudy or do you see water drops on the dipstick? Is the engine running rough? Do you have an excess amount of "steam" coming from your tail pipe? Those are the first areas to look. Let me know and we can continue to diagnose from there.

If it is the head gasket you should see coolant in the oil or oil in the coolant. New thermostats can be bad right out of the new box. You can test them by boiling water on the stove and putting it in an watch to see if it opens at the right temperature. Between 185.F - 205.F (average is 195.F)

was it over heated? may need to check for blown headgasket or leaking water pump

Might be the heater matrix for the car heating system that is leaking in which case your carpets will be wet underneath

If the matrix is ok then I would hazard a guess that the block has cracked and gases are being forced into the cooling jacket around the block.

Fill the radiator leave the cap off, run the car stationary , watch the water , if there are lots of bubbles coming up from the radiator your head , block or gasket needs attention

The blowing of air into the coolant resevour is caused by a leaking head gasket. What's happening is the cylinder is blowing air into the cooling system causing this to happen.