Did it get overfilled with oil or refrigerant?

It seems like the compressor is fighting against the high side pressure till things get up to speed.

I'd take it to a shop that specialized and have a flush and fill done and a new drier installed. Cheaper than a new compressor and it would eliminate an overfill/blockage from the list.

1989 Dodge Power Ram 50 w/ no engine <- rotten frame <img src="/forums/images/graemlins/frown.gif" alt="" />
1988 Power Ram 50 2.6 Long Bed
1990 Mitsubishi MightyMax V6, swapping to the Daimler-Benz OM617 3.0L I5 diesel