'01 E430 A/C blows warm (readings inside)

[pmizell]

A couple of weeks ago my A/C degraded from freezing cold to sorta cool to current warm air. My compressor engages (clutch and hub) and the pushbutton diagnostics showed I was a little lacking on the low side ... no error codes (except sun sensor) were pulled. Seemed like a classic low refrigerant issue. That is until I tried to pour a can of 134a in the system but there was too much pressure at the low port and it wouldn't take it.

Bought a manifold gauge to see what's really up and today with 85F ambient and engine rev'ed to 1500 rpm my pressures settled in at 95 low, 145 high. That's obviously a high low and a low high. Any experts have a general idea what's going on here? Sounds to me like there's either a restriction in the system or the compressor is almost shot although it has never made any unusual noises to indicate possible failure.

I'm at a loss. Any help would be much appreciated!