Coolant steam condensing inside window

cameo · 2012-05-06T07:31:07+00:00

Sorry for bringing up another coolant related issue but the collective wisdom found in this NG helped me out before, so it might again.I've had the leaking heater control water walve replaced a couple weeks ago in my '94 Accord and I thought that may have fixed the slowly depleting coolant issue I was experiencing. I also noticed some slick condensation inside the windshield when the heat was turned on and I was hoping it was only due to the leaking water valve, not a leak in the heater core. Well, after the valve was replaced, the condensation and cooland deplation was reduced, though not entirely. But I thought I could live with it till the next next heating season. So I was quite surprised today when suddenly the inside condensation returned but this time without the heater being turned on. The air was dry outside, with clear skies. I even tried to dry the inside air with the A/C on with no avail. The condensation became quite severe and felt slick, so it must have been due to coolant leak, probably in the heater core. What I don't understand though how that could happen if the water valve was closed. I assumed that coolant got into the heater core only when the valve was open. Could the source of this condensation be somewhere else than the heater core?I sure would appreciate your thoughts on this.Thanks.