The odd oil pressure led behavior became normal after I replaced the
small circuit board for the dynamic oil pressure warning system.
Referred to as the L-board because of it's shape, it lives inside the
speedo on 86-91 Vanagons (as well as many other VWs of similar vintage.)

Mark

David Beierl wrote:
> Hi Mark
>
> I'm sure you've already thought of this, but check to see whether the
> high-pressure sender has failed short. It may be that the L-board
> logic recognizes that as a fault condition, which of course it is --
> that sender should be open at zero rpm. After I wake up again I'll
> check to see how mine behaves with that sender grounded.
>
> Yrs,
> d
>