What year and model is your Vanagon?

Vanagons have an automatic shutoff for the AC compressor whenever the
radiator gets too hot. It is meant to protect the engine from overheating.

There is a single wire you could cut to prevent the hot radiator from
triggering the shutoff but it is probably a bad idea. It is quite
possible something is wrong in the cooling system to cause the high
radiator temps. If the lower speed(s) of the radiator fan is not working
for example.

Mark

Michael Diehr wrote:
> After my R134 conversion, the AC works, but when temperatures get
> really hot, something goes "click" and it stops cooling.   After a few
> minutes, it kicks back in and resumes cooling.
>
> It only happens in really hot weather, but of course that's when you
> need the AC most.   Is this due to over pressure triggering a safety
> cutout?
>
> Would conversion to Freeze-12 improve this situation?
>
>