After 2 years I finally decided to put a pulley on the tensioner and a belt so I could use the air but I'm not getting any cold air on my '90 Amigo. The switch is working as the light comes on and the idle speed increases when its on. I've had 2 different gauges attached to the low side and both indicate that its full. Everything seems okay but the clutch will not kick in. Is there anything I may be overlooking or is the compressor shot?