2nd Gen Non-Engine/Transmission Does Clunk mean my AC compressor is going out?

[DHayden]

My AC has been blowing a tad warmer the last few weeks. It is still cold on a highway trip but in stop and go it warms up a bit, still cool but not cold. I was going to service it but two days ago a turned the ac on and it went clunk. I could feel the vibration in the floor like it had just slammed on. I turned it on today and same thing. . maybe a second after on turn the AC on. . CLUNK and the vibration when it comes on.



It doesnt clunk or make any weird noises or have any vibration after it comes on though. What you think?

 

[J.Post]

The clunk is the vents moving to the foot position.