When your heater core is going out u smell antifreeze and your windows fog up, correct? If this goes on long enough can it be possible that the heater wont work any more? I have an 87 si and the antifreeze smell and foggy windows started to happen.. and now my heater doesnt work.. any help or comments would be great.. thanks

 

if your heater core is bad you will have a wet carpet underneath the dash on the passenger side....
and yes it probably will smell like antifreeze.....