retrofitted with the volvo kit the past sunday, pull vac and recharged with r-134, cool air and operational, noticed engine light came on short while later, pull the codes and recorded: 2-2-1, 2-3-2, while sitting in car with window closed, can hear a "sipping" sound from dash area more toward the passenger side?????? return from church, NO ac, checked pressure from the low side, nothing!!! the compressor fine, did not notice any leak from the new dryer/receiver and compressor, any idea???, now no ac, reset the code, after a short drive, still error code 2-2-1 with engine light on......... help, possible condenser or evaprator leak, but how difficult and how much$$ thanks in advance, engine vibrates a little for many years and no problems (pass inspection, 22-23 mpg overall, etc.)........... 1991 16v 125k