I changed the compressor in my 2004 2.7L. After vacuum testing the system and refilling it, it worked fine until the pressure increased and the clutch started smoking. The shop that refilled it didn’t notice until it was too late and the new clutch had burned up. So I put in another compressor. After filling this one, I watched it as we tested it. The new clutch began smoking as well. Am I looking at a blockage in the system or possibly a compressor relay?