1. I have a 1999 Volvo s80 and the ac stops cooling after 15 to 20 mins. So I turn it off for 10 mins and it starts cooling again for another 15 to 20 mins...so on and so on. After reading the post i gather that there are two issues that I need to check:

a. Refridg. Low which and i hear that you need to fill on high side? if so what PSI should i charge it to?
b. interior Climate Sensor dirty ( how much PSI should i use so i do not damage during blow out.

2. I did find that i had a leak in the coolant reservoir (pin hole just outside the fill cap. i have purchased a new part and will replace. My question here is could this effect the A
C?

 

I found out one thing on my 2001 T6 that if you have the thermostat (either driver or pax) set at 62 degrees and in recirculation mode it will freeze up. Turn off the recirculation mode and move the thermostat to a more realistic temperature, say 72 degrees.

 

The clutch might need to be reshimmed.

 

Consider the clutch shimming and / or bypassing the thermal cutout switch. I recently did both options and the A/C stays on and blows cold. (not sure which one actually was my cure) I went the route of the "ghetto" shimming job where you insert shims on the outside of the cluth/pulley to push it closer to the compressor. Didn't have to remove the compressor to do this job.
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