Bright green fluid, antifreeze???

Yes. Coolant can run all sorts of locations when the body panels are installed. Are you sure it's not coming from one of the side radiators? If not, check all the upper coolant hoses that you can see in the engine compartment. If nothing there, you're likely going to dig deeper.

There are two big fatty hoses off the pump itself (#15, #31), and one small s-shaped hose (#17). They're all a beyotch to reach --- my money is on one of the upper hoses, just cuz that'll make you feel better and not sweat so much.

Check the diagram here:
http://www.ricambiamerica.com/article_info.php?articles_id=1462

 

Can you confirm that nothing is coming from the upper hoses?

 

I had a similar symptom and it was a small hose inside the heater box. The fluid is coming from the front of your car?

 

The heater box is in the front trunk, it is possibly a heater core or hose up the front causing your leak, removing the carpet from the front trunk will allow you to see more of the hoses and if it is inside the heater then you will need to start taking things apart, check for dampness in the trunk area, also I could smell coolant when I lifted the hood.

Remove the carpet and check it out, if it is not visible from there, I would take the heater apart and check for leaks inside.

 

James is right on the money I reckon. Sounds like it could be a busted hose on the heaterbox at the front of the car.

As mentioned, remove boot trim and check it out. If you have to, fill up coolant header tank with water again and start the car to get it warm. Basically, do whatever it takes to make the leak become visible. Once you can see where the water/coolant is coming from, then find it and fix it.

Hopefully, its something simple like a heather hose or something. Hopefully you do not have a leaking heater core.
I am sure they are NOT cheap to replace!!

 

VERY strange. Just start the car and see how it runs.

 

Gurgling noise is the sound of the alien screaming and puking its guts out as its dying when he ran it over! The green stuff is its blood! Carcass is probably stuffed in the wheel well

 

BWA HA HA HA HA HA
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+1-----Be careful, the weatherstriping has to come out to pull the carpet back--I pulled mine apart when I first got my car because it had a similar leak exactly where yours is...Turned out to be nothing, I think is was a little residual coolant laying somewhere from the major that was done 2 days beforehand. Never leaked since...

 

When the stereo was installed (was it a prior owner?) was anything screwed into the front wall (heater box side) of the trunk?

 

You sure it wasn't an alien?

 

That is a rubber flap(nipple) that is to let condensate from the a/c coil drain out. If anti freeze is leaking from the flap you will have to disassemble the box. The pump which is on the outside of the evaporator box should be off when center console switch is OFF or on A/C. The pump comes own depending on temp settings and control function at the center console. The pump then circulates hot coolant to front of car for heater.

There are 2 hoses that go unto the lower left side(driver side) of box( that have a wierd clamp.....check to see if it is leaking there and somehow entering the plastic box....doubt it, but check anyway.

 

Leaking heater core perhaps.......