with Guitar Jones. You could ahvve a broken door or bad actuator. Id first check to see if the recirc door is broken. All you have to do is drop the glove box door all the way down so you can see the HVAC housing. Look to the right side of the HVAC box and you will see a open grille with a door mounted in it. The door should open and close from max a/c to regular a/c. If there is no door moving behind the grille, it has broken off. It will then fall down and block off air flow to the fan motor and cause low air output out of the vents.