I just was messing with an in-op AC compressor on my other van.    There
is a low pressure switch that you can jumper...probably similar on the
Vanagon...dunno,  my Vanagon just has windows, wind-down window that always
work......Anyway, you unplug the switch, which on my other van was near the
condenser (?)  There must be enough refrigerant inside the system... to
trigger that switch or  no current is sent  to the compressor.  If you
unplug the line to the switch and jump across the two terminals with the AC
turned on, you will see your compressor engage..maybe.   That tells you you
may just need more refrigerant..I am told.  Bet you could find it in the
Bently book if you have one.

On Fri, Jun 20, 2014 at 7:27 PM, Ben <syncro@gmail.com> wrote:

> Raymond,
>
> The clutch is designed NOT to engage when your refrigerant level is too
> low. Saves you from frying your compressor.
>
> Evacuate, refill, and try again.
>
>
> BenT
> sent from my electronic leash
>
> > On Jun 19, 2014, at 1:28 AM, raymond markett <raym02@YAHOO.COM> wrote:
> >
> >
> >
> > Hi,
> >
> > I am try to revive the air conditioner on my 1985 Westy.  When I turn on
> the A/C the fans inside the passenger compartment blow warm air.  I looked
> at the compressor, and it isn't turning. After turning the engine off, I
> found that I can turn the compressor by hand.  I don't believe the
> compressor is seized. My guess is that the compressor clutch isn't
> engaging.  I plan to find and check the fuses and relays that send power to
> the compressor clutch.
> >
> > Does any know of a good way to temporarily jumper power to the clutch to
> see if it will engage?  Any other advice?
> > It sure would be nice to have the A/C working this summer.
> >
> > Thanks,
> >
> > Raymond
>