It will only engage when the system is full of refrigerant. Serves to protect your compressor from spinning without adequate lubrication.

BenT
sent from my electronic leash

> On Jul 28, 2014, at 9:18 AM, Raymond Markett <raym02@YAHOO.COM> wrote:
> 
> Hi All,
> 
> Is the 1985 Vanagon A/C clutch supposed to cycle even if the pressure is low? When I turn on my A/C I get voltage on the clutch for about 3 seconds, but the clutch doesn't engage to turn the compressor.  The clutch winding has continuity to ground so it's not open, but it may be shorted. It reads a few ohms. 
> 
> I know the A/C clutch cycles on my Ford even if the refrigerant is low. Does anyone know if the Vanagon A/C clutch is supposed to cycle on and off even with low refrigerant?
> 
> Thanks,
> 
> Raymond
> 
> Sent from my iPhone