One problem could the water inlet hose "O" ring on the pipe that goes from the lower radiator hose to the block. Also your heater core could be leaking. If that's the case, your front windshield will fog up in the colder weather.sounds like your heater core is bad or leaking as was spoke of. for you said whenyour heat it on , there is a sweet smell. You get your heat from the heater core, so if your smelling antifreeze when your heater is on, I would believe , it's your heater core. As far as the sweet smell your getting from the heat.
if it rear air and heat it could be the line carring the antifreeze tho the back heater core.
It sounds like the heater core is leaking. Check for the smell of antifreeze and that will confirm the bad heater core.
The heater core or a hose to the heater core has a leak. Hopefully it's a hose under the hood because it's a very involved process to get the heater core out.
There are a bunch of things that can cause that. Water pump, thermostat, switch not engaging the heater, air in the heater core, not enough antifreeze in the cooling system. do i need a new thermostat
your heater core is leaking anitfreeze! heatercoreleaks antifreeze into the heater & ac vents causing a burnt spell & oily film on the front window.
too much anti freeze has nothing to do with heater. but you should always keep the antifreeze level under the MAX indicator on the reservoir because you need the space for the heated antifreeze to expand and to siphoned back when it's cooled down.
Sounds like your heater core has gone bad.
Blown Heater Core - The heater fan blows past the heater core and if it has a hole in it your antifreeze ios being blown onto your windshield.
If the heater core in your vehicle goes out, you will not be able to use your heater or defroster. You will also notice the smell of antifreeze throughout the vehicle and possibly a film on the windshield from the antifreeze.
Antifreeze is used to heat the cab of your vehicle. When you turn on your heat in your cab, it opens up a valve that allows the hot antifreeze to flow from the radiator into the heater core. If there is a leak in the rubber tubes that flow into the heater core, or if the heatercore is damaged, you will smell the antifreeze in the cab of the vehicle. You may need new hoses to the heater core and/or a new heater core.
You have a leaking heater core. You might smell antifreeze if you turn on the defroster.
heater core leak