Try the .9 near the oil pump.  That should take care of your problem.

Dennis
-----Original Message-----
From: Jeff Howard <howard@AUR.ALCATEL.COM>
To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM>
Date: Wednesday, April 15, 1998 8:05 PM
Subject: Oil pressure sensor confusion (Was: Before I buy an engine ...)

>I'm following up on all the advice I received for my
>'87 Westy's low oil pressure problem. The warning light
>and buzzer come on after about 10 minutes of driving
>on the transition from high rpm to low rpm. Typically
>this is when the rpm's fall below 2500.
>
>The oil pressure sensor that the dealer replaced is
>a 1.6 bar sensor located in/near the oil filter flange.
>According to the dealer fiche there are two other sensors
>a .9 bar sensor near the oil pump and a .3 bar sensor
>somewhere else. (??) In the Bentley's I only saw two
>sensors. Does anyone know which sensors perform what
>function and which one I should be looking at for the
>high to low rpm transition warning? Dennis, I think
>you indicated that the one near the oil pump might
>be the one. I just had the dealer order one. Any help
>with resolving this is greatly appreciated!
>
>Jeff H.
>'87 Westy
>
>ps - for those who just tuned in, no need to discuss
>oil type, filter, pressure relief piston or oil pump.
>We've been there.
>