Heater core has failed.
Heater core leaking?
The two most common possibilities are a plugged up condensation drain for your air conditioning, and a leaking heater core. You will usually smell antifreeze from a leaking heater core. Another less common problem is a leaking windshield gasket.
The heater is leaking coolant.
Your heater core is most likely bad. Most heater cores are located behind the dash board on the passenger side that is why you found the leak on the passenger side. Change your water pump gasket, you blew it out. about 200 bucks at a shop
Water is leaking on passenger side floor board when heat is on
You will need to replasce the heater core.
check the drain line on the a/c or does it have antifreeze smell to it then it could be the heater core
The ac drain is plugged. The drain hose is on the firewall on the lower passenger side. ...that, or your heater core is leaking.
You heater core has most likely kicked the bucket. It is anti-freeze leaking in your car. You should get that fixed ASAP (obviously!).
Either the windshield is leaking, or your heater core is leaking. Usually people can smell anti freeze if it is the heater core. thanks,can it be fixed by a substance like radweld to stop the leak or do you replace it.
There is a good chance that the heater core has rusted out. This is a little radiator inside the passenger compartment for transferring heat from the engine coolant to the air in the cabin. Always fun to replace.
could be a leaking heater core ( Steam ) . Depends on WHAT KIND OF SMOKE. Is it steam or smoke. Smoke like something burning could be oil. electrical, etc