Hi,
>
> My 1998 P38a airconditioning did not work when switched on in the warm
> weather today. It has been used occasionally during the winter to keep it
> used to the idea but today, zilch.
>
> I suspect the compressor clutch is not working: (should the centre disc
> inside the pulley turn when the compressor clutch is engaged? It doesn't)
> Can anyone say what is the most likely cause? I have checked the appropriate
> fuses and they are OK. As you know, the compressor is very inaccessible.
Hey, I think I know this one.
When I took my P38 in for a service, Steve at James French Land Rover noticed the compressor wasn't cutting in. He struck the pulley a light oblique glancing blow with a suitable metal object and it span up. Apparently there is a known tendency for the clutch to stick and you can solve this by shimming it up a bit. He did this for me for a few quid.
HTH David