Sitting her in the garage looking at my car in the driveway spilling lots of coolant on the ground. One drop per second like clockwork. Leak is coming from the firewall about halfway up close to the center but a little closer to the passenger side. Cool day, so it's not the A/C. Guess I need to start looking for a heater core.
Any other ideas?

Thanks,
Oldman

obviously check all the hoses around that area just to make sure they aren't leaking. Check the passenger side floorboard and see if there's any coolant leaking into the cabin.

However, it does kind of sound like the heater core if you can visually see it dripping from the firewall.

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Joseph

Current: 2013 Infiniti G37 Journey
1999 Infiniti G20T - Sold
1999 Buick Lesabre - Race Couch - gone but not forgotten

all floors and carpet are dry. That's what has me a bit puzzled.

The AC will condense moisture even when the humidity is not uncomfortable if the compressor is turned on. That may be the drip source.

If your heater were leaking, the moisture would sit in the bottom of the HVAC box and you'd also smell the coolant smell inside.

my personal experience has been, dry floorboard, not a heater core. Hope it's a hose. - BC

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In Memory of Brad - 1/21/1977 .. 10/23/2013 ...... Aaron - 1977 .. 2017 .....
2017 Hyundai Santa Fe Sport ..... 1992 Bonneville SSE 1SB 170 HP L27 4T60E retired/sold to MattStrike ..... 2005 Bonneville SE 1SC 205 HP L36 4T65E - retired/salvage yard ..... PBCF user 2321

Recently replaced the water pump and since I live in Savannah, Georgia, I just filled it with water. No coolant smell. The A/C was not turned on today, and besides there is about a half gallon of water that dripped out. Floors are dry, but I just don't know what else it could be. I've been having to add coolant, so it all made sense.
Except - obviously - the lack of water on the floor.
Thanks,

Keep your fingers crossed that it is just a bad hose going to the heater core. It may be leaking at the heater core fitting on the firewall.

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bobgto65

2004 Bonneville GXP 62,000 miles purchased 04/13
2009 G8 GXP PBM, M6 9580 miles, no mods, sold 08/15
2009 G8 GT SBM 36,000 miles, modded 430 whp
2002 Bonneville SSEi 203,200 miles (sold 3/2014)