I got the heater core bypassed last month after all the antifreeze was leaking into the passenger's side of the car. Noticed yesterday that under the mat on the driver's side it is soaked with antifreeze. I do not have any leaking antifreeze on the ground, just onto the carpet. Any idea where it could be coming from and why? I guess I will bring it to where they did the heater core bypass, but still would like to find out the problem first.
Andrew and his 83 Eldorado :)

Could be the heater control valve although I would imagine that's where they did the bypass.

Whatever remained in the core leaking down?

"Whatever remained in the core leaking down?"

That's what I think, but it was tied off 3 weeks ago or about 200 miles ago. Will find out and update here tomorrow.