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A leaking heater core. oil is leaking on the engine and is burning and beining drawn in by the vent or the blower motor is going out Are you sure it's smoke or is it steam? If your windows are steaming up and it smells like maple syrup , your heater core is probably leaking.
Wiki User
∙ 19y ago
Wiki User
∙ 16y agosmoke coming from a/c vent indicates that the heater core is leaking and needs to be replaced.this smoke is hot antifreeze, it will not cause a fire but it does stink and will eventually cause car to overheat
Wiki User
∙ 14y agoThe heater core or air conditioning core is broken and leaking fluid into the heating unit. simple to fix. just install a new heater core.
Wiki User
∙ 13y agoIt is probably steam coming from a leaky heater core.
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What is the smoky smell coming from vents when have either heat or AC on in 2000 dodge caravan?
your heater core is leaking anitfreeze! heatercoreleaks antifreeze into the heater & ac vents causing a burnt spell & oily film on the front window.
If my 97 expedition is leaking coolant - how would I know. I am getting the antifreeze smell out the AC vents but can see no drips or liguid in the cab. Would the degas bottle be empty or not full.?
The "antifreeze smell out the AC vents" would mean only one thing, you have a small leak in the heater core.
Blows out cold air threw defroster but not the ac vents?
Check for vacuum leak either under hood or under dash Check for bad vacuum actuator under dash Defrost is the default setting
Why is your AC not switching vents 1999 Chevy Van Express 350?
Check for vacuum leak either under hood or under dash Check for bad vacuum motor underdash Check for bad selector switch
How do you change out ac belt for 2001 Tahoe?
The ac belt has a tensioner that is accessed from below, and takes a tensioner tool to loosen. Remove the serpentine belt, release tension on the ac belt then the belt can come off for replacement.
Why would smoke come out of AC vents?
If that smoke is more like steam, you have a leaky heater core.
What would cause smoke to come out of vents of a 1999 Dodge Intrpeid?
Is it smoke or is it atomized freon leaking from the AC system? If it fogs the windshield and smells funny, you may have a leak in the AC/Heater system.
Why would smoke pour from your ac vents without the ac running?
The heater core is leaking coolant.
Is smoke coming from ac vents plugged evaporator drain?
Nope, that would be steam.
How come smoke comes out of the ac ducts in a ford focus?
Just a thought - - - It MAY not be smoke. You could have a pinhole leak in the heater coil which allows vaporized engine coolant to spray into the car via the A/C vents.
On a1996 corvette what causes the AC air to blow out of the defroster and floor vents for about 30 minutes before blowing out of the dash vents?
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Why does black dust come from the ac vents?
Dirty ductwork and/or filters...
What causes the ac on a 97 lumina to go floor and dash vents by itself?
broken blend door
What causes air to blow out the floor and defroster vents but not out the panel ac vents on a 1997 firebird?
How easy is it to replace head gasket on 1994 firebird lt1 motor
What are the air vents next to the ac vents in bedrooms and hallway?
Return air vents.........
What would cause smoke to come from the vents of a 1991 Cadillac DeVille?
Check the Heater Core? Did it smell like oil or antifreeze. My Heater Core went, started blowing out smoke from the vent. Most Likely the Problem. "smoke" poured into my 1991 when the ac blew out all the freon and froze up the outside temp gage.
Smoke is coming through the vents of your van Then the ac quit Could there be a connection?
The smoke is most likely a leak in prestone. Is the antifreeze level going down? OR, if the smoke has stopped, then something blew on the a/c. and now there is no more freon.
