[shorod]

When the A/C stops blowing cold, does the compressor clutch continue to cycle, or just stay disengaged?

If the compressor clutch stops cycling, one thing you could try (although for safety reasons it's not recommended) would be to short the refridgerant pressure switch. If the compressor clutch is working, this should force the clutch to engage and the air should get cool. If you were to try this and the compressor did not engage, I'd start to focus on a heat-related open circuit in the compressor clutch coil. If the clutch did engage I'd be checking the pressures again and suspect either an overcharge or a low charge.

-Rod