Here is advice:
If the drain plug under the evaporator coil is plugged up it will cause condensation to leak into the car. If the heater core is bad it will allow coolant to leak into the car. If the leak is warm and smells sweet it is the heater coil.
If the leak is around a fitting and you can see it, then it may be repairable. Unfortunately many heaters leak at the welded seams and there is no satisfactory repair for that. You may well need a new heater.
See "Related Questions" below for more about 1986-1995 heater coresUsually If the heater CORE is bad it will start to leak, dripping water on the carpet, or steeming up the windows. i have a 1992 Taurus in the garage now for a new heater coil. white smoke, the sweet smell, is the heater coil. you may not see any water dripping in the car if it is a small leak. try a bottle of bars leak before repairing. it could get you through this winter. work for me last winter. sorry to tell you that to change the coil, the dash has to come out. only ford does it this way. the repair can be more than your car may be worth.
you can try radiator leak stopper, but i would just replace heater core .,eally cannot be repaired.
chances are you have a cracked heater coil
Usually caused by leak in heater coil.
yes it can. If your heater core is leaking it will leak on the passenger side floor in the cab of the truck or car.
heater coil is good conductor of electricity
Inside the car, passenger side, mounted near the firewall. ok theres heater coil the heater core is under the center of the dash under a acess pannel do not but one form auto zone has 3 leak on me go to the dealer
It is inside the heating A/C housing. The dash has to come out to get to it. A very involved repair. Even the most experienced master mechanics cringe at having to do a heater core repair. I would suggest putting some aluminum stop leak in the radiator. It will stop the leak in the heater core and will save you the grief of pulling the dash out.
You can try Stop Leak, in an emergency. The only real repair is replacement.