Given that it is cutting out for 5-10 minutes, I'm thinking that the system is going over pressure (over temp) and there's a problem not related to the compressor or compressor clutch.

You need to find out if the compressor is energized during this phase. I'm thinking the answer is that it's not energized. A high temperature condition could be from a number of causes, but I'd do the easy stuff first: Make sure the A/C is engaging the engine fan, and make sure that the condenser fins are absolutely clear of debris. However, if all of these things have been done, something else is going on.

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Chris Herbst
Scottsdale, AZ

1992 940 150k
2005 S80 30k

The symptoms you describe do not necessarily mean bad clutch or compressor, in fact that is not likely. How was it determined that the compressor or clutch is bad? When a clutch fails it usually does not work at all due to an open coil or mechanical breakage. It typically does not go intermittent as you describe. I think more diagnostic observation may is needed. When the cooling stops you should determine if the clutch is disengaged or not, simply pull over and have a look. If the clutch is still turning then it could be icing up of the evaporator or other causes. Has the low side pressure been checked? If the clutch is disengaged it may mean the compressor overtemp sensor has kicked out (i have had this happen on my 97 V90). In any event do not change the clutch without a positive diagnosis.
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David Hunter