Check inside the car undre the dash , check the heater core.
The Ford Taurus is famous for having leaking heater core. It is located on the passenger side inside the passenger compartment and inside the dashboard. It costs about $1000 to get a mechanic to fix it.
You can bleed the cooling system from the heater lines at the firewall. Before you start the engine, loosen one of the heater lines, then replace it without the clamp. Start the engine and when it reach's operating temp. slowly open that heater hose slightly. Coolant and air will then come out. Be careful of the fumes because the coolant will drop on the exhaust. Make sure the heater inside the car is on max. Bleed the system till all the air is out and you get hot air inside. Refill the rad.
The heater may not be on - but the fan still blows air through the vents when they're open !
The heater blower may not be working properly. Without the heater blower working, the air will not come through the vents.
First, with engine off make sure the heater hose will come off easy. With engine at operating temp. and heater inside car on high, slowly open the heater hose to let out any air that is trapped. Yes, fluid will come out also. Do this a few times and check inside temp.
A very basic answer is: The hot water the engine produces is circulated thru the heater core. The heater core looks like the autos radiator only smaller. The heater core is located inside the heater box. So as the engines hot water circulates thru the heater core the heat will transfer into the heater box. As long as the engine is running and everything is working properly the heater core will stay hot inside the heater box.
Exhaust fumes can enter the cab from a faulty exhaust system through any opening that leads into the cab, such as a hole from a rotted floor panel, trunk floor, inner fender, etc. Engine oil leaks under the hood can also drip down onto a hot exhaust system, causing smelly smoke that can enter the cab through the fresh air intake.
take hoses off it on the firewall and then unbolt all the bolts from the outside of the heater housing on the firewall and the inside heater case will now come down up under the dash, when you get it down you will see the heater core inside the case, pull it out and install new one and then reverse the disassembly process to put it back together.
You most likely have a leaking heater core inside the truck.......
High pressure coolant is blowing out through a small hole in your heater core, it will need to be repaired or replaced. If it is warm out it might be AC refrigerant leaking.
This is caused by a faulty heater core that has corroded and now has a leak. It needs to be replaced.
Heating hoses are exposed and need to be replaced. The heater core is leaking coolant.