I have a LeSabre that blows warm air on the floor and cold air at the window defroster. The vent blows very little air and what it does is a mix between warm and cold. After the vent is left on for 20+ mins it may start to blow a bit more air.
It used to be a little colder, I changed the thermostat with the max hottest one they make and since then the floor has gotten a little warmer.
It almost seems like the floor is bringing air from the engine and the defroster area is bringing cold air from outside. Not sure what is going on. For now I have put a towel over the vents on the window to make it tolerable. Yesterday is was a few degrees above 0 and I was not to uncomfortable. It seems like when I switch to floor mid or top defroster or a blend its blows about the same amount from the top and bottom and almost nothing mid vents. Mostly from the top defroster vents and the floor heater vent. Anyone know what this would be?
I read something saying something about a mood actuator and a temperature blend actuator on a similar problem where they only had air from the defroster. Could that be my problem and why the cold and warm air at the same time?