I drive a 03 honda accord v4 lx. Winter has come and I try to heat up my car by using the defrost mode but i notice air mostly coming through the front vents of the dash.. Very little air comes through the defrost and can even take a really long time to defrost my windshield... Also my feet will be freezing as i drive and I try to switch the button to feet arrow only but same situation as defrost.. Air mostly comes through front vents and very little air flow on the feet... This happens no matter how high i turn the air flow... Airflow is strong and this is a used car and had one previous owner. I have at least 130,000 miles on it.
I was thinking after watching a few videos on youtube that i need to replace the flap door actuator but im open to any other suggestions if u have any before attempting it.
What actually actuates the doors? Does the computer use directed vacuum to move them? My 1999 Ranger has a similar issue where it will blow air out of the top of the dashboard at certain engine loads, even though the selector is going somewhere else. The truck's computer uses engine vacuum to move the guide doors. The system has leaks, and the vacuum reservoir is above a plastic liner in the wheel well. I don't feel like dealing with removing rusted screws, so I just live with it.
Google it and see what others say. You have a 19 year old car, very likely if it's vacuum actuated, you have minor vacuum leaks due to deteriorated rubber hoses.
You may crack your car windows open a bit.
So with this comment do u mean I can't do anything about?