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Check for vacuum leak either under hood or under dash Check for bad vacuum actuator under dash Defrost is the default setting
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Why does the air conditioner blow cold when driving and then blows hot after it is stopped and restarted. it has been charged with freon.the blower works great but blows hot air.?
sounds like you need to replace either the thermostat or the temp control switch
In a 2002 dodge stratus heat blows hot then it gose cold then hot again?
Check your coolant level, If low you need to find the leak.
How do you replace a heating coil for a Dodge Grand Caravan 2005?
How do I replace the heating coil in a 2006 Grand Caravan? I have no heat it only blows cold air.
What cause 1993 grand prix se to blow cold air on defroster setting?
A water thermostat stuck open. Air in the heater hose lines (caused by low radiator coolant). Air temperature (mechanical) control cable not opening the heater hose water valve (under hood).
Is there a temporary fix if coolant mist is coming out of the AC vents on a 1998 Ford Ranger until you can get it to the shop?
I don't think it is coolant. It is just condensation caused from high humidity and the cold air. If it is coolant it should get on the floor and you should loose coolant.
When heater is on it blows cold on drivers side and hot on other side?
Your average A/C unit blows heat through all vents.
Why do you get hot air at floor and defroster vents but only cold air at the dash vents vents in a 1995 chevyvan 20?
the middle vents only supply air from the ac unit using a separate in dash fan. the floor and defrost vents come only from the heater
What causes cold air to come out of air vents when heater not on?
The heater may not be on - but the fan still blows air through the vents when they're open !
Why is the AC air cold and the blower is working but no air is coming out of the vents on a Chevy Astro van 6 Cy when ac is on and charged It blows hot air?
The air should be comming out of the defroster vents. If so, most likely, it is the vacuum line that controls the vents. It is on top of the engine below the air cleaner, and runs to the front right of the engine. Buy the replacment so you know what your are looking for.
Why does a 1987 Astro van have no heat and blows cold air out vents?
It's either the thermostat or the heater controls.
How do you get your 1996 Chevy z71 to blow warm air through the vents when you turn it to heat it blows cold?
If it still blows cold when it is at running temp, check the engine thermostat, its probably stuck in the open position.
Why doesn't heat nor cold air blow out of front or floor vents but does out of windshield defrost vents?
It sounds like your vacuum controls are stuck on the defroster I had that happen and I sprayed a lubricant into the vacuum lines and it cleared up
The Ac blows cold out of the rear vents but blows hot out of the front vents?
Usually is a vacuum problem. The vacuum works through the climate controls to make the vent doors open and close.
What is the problem with my Defroster blows cold air but the vent and heater blows nothing in your 1999 Ford Taurus?
Could this be 2 separate problems?Stuck in defrost modeNo heatSee "Related Questions" below for more about both
What does it mean when cold air comes out of some vents and hot air out of other vents when the AC is on in your car?
because when you first turn it on, hot air blows from it... thats just how it works, then after a while cool air comes
What would make my 2005 f350 diesel blow cold air out of the defroster when the settings are set on hot but when I accelerate hard it blows warm air?
Check your antifreeze or cooling level this happened to me.
Which way exgaust fan run?
It is not stated what fan is being used? Assuming it is a cooling fan used in a computer: the fan usually blows hot air out of the computer through exhaust vents, drawing in cold air from other vents.
