"Mike Jackson" wrote
Any ideas what could be wrong here?
Perhaps there's nothing wrong! My a/c also doesn't work at high rpm's to save all the small engines (55kW) energy for driving. It's a feature, not a bug. I tried: at 3000rpm a/c works perfectly, at 4000 not at all (but 4000 is already beyond 100mph with my car).
cheers
Thomas