I would think if steam is coming from your vents that you have a leaking or defective heater core and or one of its components and in most cases the water leaking from the core can be found in the floor board on the passsenger side and this needs to be fixed right away due to engine coolant loss and the possiblity of engine damage from overheating. Also if the air conditioner developes a leak it could be mistaken for steam however if the freon is lost the ac will quit. , EzForJesus
The steam could be coolant from a bad heater core.
If the vents are inside the cab of the truck, this could mean you have blown your heater core.
The magma gushes out and then it flows every where. The volcano has vents that let air come out. When the vents open steam/ smoke comes out of those vents.
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
It is probably steam coming from a leaky heater core.
You need to check and/or replace the heater core
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.
Since steam is water evaporating, water that becomes steam may not be clean. So, when the steam goes thru, some of the dirt may come off along with the steam when the steam becomes water.Creating deposits in the steam vents.
Vents in the volcano are passage ways for the magma, steam, and heat to escape the earth.
Compressor not operating.
The heater blower may not be working properly. Without the heater blower working, the air will not come through the vents.
The heater coil probably has a leak causing steam and vaporized antifreeze to be released into the vents. Is it using coolant?
heater core needs replacement
Fumaroles are steam vents. There is no true opposite.
Volcanic vents that let off sulfuric steam.
Most likely the heater core is leaking. Has to be replaced.
A geyser is a natural vent that discharges steam or water from Earth.
The heater core is leaking coolant.
When there is a problem in the vent system it defaults to defrost setting. Check the doors & vac supply
Check for a vacuum leak -sounds like it is starving for vacuum and reverts to the default position
A bad Heater Core------ IF U use Anti-freeze in your Radiator - U should smell it. also U should have water on the passenger side of the vehicle-INSIDE or outside.even under the carpet. Sounds like you have a leaky heater core, This Usually will cause the windows steam up. And is quite an involved job to replace core.
Sounds like your heater core has a leak and the sweet smell is your coolant.
Hey Mike==If your car has A/C when it is exceptionally humid outside, it is common for the vents to blow some vapor. It is generally more visible when the sun is shining inside the car. Nothing wrong. GoodluckJoe