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Why wont the dash vents work in your 99 mercury sable but the floor vent and defrost vent work fine?
The issue with the dash vents not working in your 1999 Mercury Sable, while the floor and defrost vents function properly, is likely due to a malfunctioning blend door or a problem with the HVAC control system. The blend door controls the airflow direction, and if it is stuck or damaged, it may prevent air from reaching the dash vents. Additionally, there could be a vacuum leak affecting the actuator that directs airflow. It's advisable to have a professional inspect the HVAC system to diagnose and fix the issue.
Why heat blows out vents only not defrost or floor?
Most likely a bad or disconnected vacuum hose to the defrost/floor selector in the heater ducting.
Why do i have a Burnt oil smell through defrost vents in a 2002 Sable?
FIND A PERSON WHO KNOWS A HOUSE CHECKER OR SOMTHING
Why doesn't heat blow out floor only?
the heat blows out the defrost when it should blow out floor vents only
Why does Air conditioner work on defrost only and no front vents or floor?
Vacuum leak
Why does my air only blows out my front vents and not the floor or defrost on your 03 dodge ram?
There may be several reasons why the air only blows out the front vents and not on the floor or the defrost on the 2003 Dodge Ram. The fuses may be blown, or the heating coil is not working correctly.
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
04 Chevy trailblazer why don't defrost and floor vents work but not face vents?
The mode door actuator has failed. We have instructions for repair at www.trailvoy.com
Can not get air to change from defrost vent to dashboard vent on Mercury Sable?
If your Mercury Sable is stuck on the defrost setting and won't switch to the dashboard vents, it could be due to a malfunctioning blend door actuator or a vacuum leak in the HVAC system. Check the actuator for proper function, as it controls the direction of airflow. Additionally, inspect the vacuum lines connected to the HVAC system for any leaks or disconnections. If these components are functioning correctly, there may be an issue with the climate control unit itself.
Why won't the dash vents work in my 95 Chevy Camaro but floor vent and defrost vent work fine?
the ducts can not be hooked up for the vents to work
Why won't the dash vents work on my 1995 Chevy Camaro but floor vents and defrost vent work fine?
When there is a problem with the vent system it dfaults to the defrost setting. Sounds like you have a problem in the doors that direct the air flow.
...when you turn on your AC in your 1996 Jeep Cherokee and cold air only comes out of defrost and floor vents instead of your main vents. How do you fix?
you need to replace the vacuum.
