if you were to give us more specifics we might still be able to help.
For example, when you are using just the heater, not the a/c, does it do the same thing...air not coming out dash vents fast enough ?
Does it seem the same whether car is moving or standing still ?
Does it seem to be blowing a lot of air on feet yet not much on face vents ?
is it really true as you stated before that in max mode air comes out same as in normal mode....that is...in max mode a door is supposed to close to outside air...only recirculates air within cabin....in all other modes, fresh air comes into heater/ a/c housing through cowl area. I mean there is a recirc button on heater ac controls. does air come out same speed whether that button is pushed or not ? ...with that button pushed it is the same as putting a/c in max mode, though it can be done (recirculate air) when heater only is on.
Attempting here to determine if fan not working properly at all four speeds, OR if recirc/fresh door not working.
From what you've already stated this seems to have nothing to do with cold, air conditioned air, but only fan speed not proper.
