A/C Sounds like its blowing but no air flow

[jizay]

On a trip recently my automatic A/C (its the one that has seperate temp control for driver and passenger) seemed to work fine. Then it seemed to just blowing air out of the front vents. I switched to all the different vents and could barely feel anything. I turned the fan to max and it sounded like it was blowing hard, was very loud but nothing was coming out of any vents. Almost like a door was shut keeping the flow from getting to the vents. Eventually I turned the a/c button (snowflake) off and it got quiet even though the fan was on max. when i hit the button again, loud as can be. At one point I just opened the sunroof, left the a/c button off, fan still on and turned the a/c mode to outside air (not recirc). This had some air flow coming through, eventually I hit the A/C button again and there was no loud sound and the air got cool. Anyone have an idea? Would this be the final stage resistor?

Thanks.

[dalfier]

Mine happens, too. I believe the compressor is freezing up, because if you turn off the "snowflake" and let it thaw out, the "snowflake" will once again work after a couple minutes of thawing.

[Weasel]

Does sound like freezing up, but not the compressor, the evaporator (cooling part in the dash) As it operates it sweats moisture condensed from the air being blown through it, and if it gets too cold the condensed water can freeze on it and block airflow. This usually happens when the charge is just a cunt hair low as the low side pressure drops which lowers the temp.