I have an 88 GL with the 2.1L engine.

The pressure switch of which you ask is located almost at the center of
the engine below and slightly to the left of the main crankshaft pully.
When standing at the bumper looking down, you should just barely be able
to see the end of it sticking out. It's a tough little bugger to get to
but it can be done from above.

Regards,

John Rodgers
88 GL Driver

digest Herbie Dave wrote:

>Dear Vanagurus,
>
>First, let me say that YOU GUYS are the reason why I own a Vanagon!  Well, I
>kind of like them too, but you guys are such a helpful group that my gratitude
>just cannot be expressed. I'd also like to give thanks to vanagon.com and
>vanagain. com.
>OK, here's my question. You guys have been helping me with my oil buzzer
>problem.  Can anyone clue me in to just where this mysterious oil pressure switch
>is that's located near the water pump?  The only one I can find is the one
>between the push rod tubes.
>Here's what I have done so far. I changed the oil filter to a factory VW one.
>I also changed the oil pressure switch between the push rods. When I went to
>take off  the wire I found that it was about to break off. I installed a new
>connector and plugged it back in. After topping off the oil I started up the
>van. The good news is that I didn't hear the noise that was giving me chills
>before. Some of you suggested that because it has sat so long the lifters may be
>sticky. Hopefully, that is it! I still need to find that oil pressure switch
>that's near the water pump. If anyone can send me a photo of the area (showing
>the switch) and/or how to unearth it via e-mail I would really appreciate it.
>I need to figure out these issues before I list the BUs for sale. I don't like
>selling "mystery" machines.
>Thanks again!
>Dave
>vwdude1957@aol.com
>
>
>