Some of the air handling dampener motors are vacuum controlled and some have a small electric motor. If it's a vacuum controlled dampener, you probably have a vacuum leak, faulty vacuum diaphragm or disconnected vacuum line. If it's an electric dampener motor you have a bad connection, faulty feedback switch or faulty motor assembly.
thats because your blower went out
Either you need to pen your vents or there is some vent obstruction.
My ac blows only in the defroster and not any of the other vents i have 98 ford windstar 3.8 v6
It should blow through the floor vents. Modern vehicles generally use movable baffles in there HVAC systems, to direct air flow where the controls indicate. If the controls allow airflow to the floor, but nothing flows out, there is a malfunction between the control switch and the actuator that directs the flow.
Find the vacuumline that goes from the intake to the resirvoir and from the resirvoir to the inside of the cab. It isn't connected.
some thing is probley cloging the vents take it appart and ckeck.
How easy is it to replace head gasket on 1994 firebird lt1 motor
your switch cable might be broke you will have to remove your dash
If air blows from defroster only, the vacuum line to the blend door may be broken. You can access most of it under the hood.
Look for an array of vacuum lines underneath the dash. There will be yellow, red, blue, and black lines. Make sure they are intact and connected in the right order. Check for loose ones and make sure they are not leaking or torn/crushed.
I have exactly the same problem on my 2000 Still looking for the answer
If it blows only out the defroster vents : then check for Vaccume leak Rick ASE L-1 Master TransMichigan.com
The mixing door isn't working. Take it to the garage as it porbably is the controler. First make sure there is vacuum getting inside the cab from the engine.
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
Likely, your blower (fan) is out.
This means that you have either an issue with a vacuum line or one of the a/c - heater doors behind the dash is not working correctly and you need to start off at the a/c - heater controller to check that all positions are working...........
The controls that direct the air flow to the defroster, to the vents and to the floor are vacuum operated. You may have a vacuum leak causing your problem. Check under the hood for broken, cracked, disconnected vacuum lines.
Check for vacuum leak either under the hood or under the dash Check the operation of the vacuum actuators Check the selector switch Defrost is the default setting on this system
Check the cabin filter if applicable.
That is actually how the vehicle was designed. If you look at the selector knob for the vents you'll notice that the arrows pointing down and for the windshield are white and the vents for the dash are blue. Basically, you can defrost and warm your feet and that's it
hi i like nomey
could be a vacuum line off
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
The flap that directs sir to the selected vents is jammed or broken...or the switch that controls it is.