I noticed this happened twice over a month ago that the AC would stop cooling, so I turned it off, then 5 or 15 minutes later I try it again and it would work fine. I had a similar issue with a 2006 Civic and it was a problem with the AC clutch. The air gap was just a bit off so sometimes it wouldn't engage. Some prying or hammering on the clutch plate got it working fine again. Does the Insight AC clutch have this problem?