Bump - just went out there and checked a few things.

A/C compressor rotates freely. System has sufficient refrigerant charge (50 psi both sides). With engine running, when I press the A/C button on the control panel the compressor "attempts" to engage intermittently, for a split second here and there (no rhyme or rhythm to the attempts, just random). Watching the gauges, the pressures barely move 1 psi on either side as the clutch just cuts out as quickly as it started. So whatever it is, the clutch just does not want to remain engaged.

It is 55 degrees here - I certainly don't think that's "too cold" for the system to engage, is it?

Any ideas PLEASE?! I'm taking this thing on a road trip tomorrow and it's going to be rainy, so I need to make sure the A/C works.

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