the soL that could

the air condition WORKED fine, when i purchased the vehicle in August. the issue was the compressor went out.

i swapped out my AC compressor for a used unit purchased on EBAY... i installed it. i got new discharge/suction rubber seals and a new belt for it.

FYI: the EVAP/CHARGE was professionally done by a shop.

when i turn on the air condition COLD, the clutch disengages sometimes and warm air flows out.

during the charge, the high side gauge was jumpy, if it matters any. i am thinking they charged it incorrectly because they tried to sell me a NEW compressor for $600.00. he said it was making noises...? which it was not...

what can be wrong? i brought it back and they did not check it... the shop said my compressor is shot. right when i got in the door.