I had an intermittent oil buzzer issue that eventually became more
consistent. It would happen even with a cold engine and seemed to
happen if my van was parked on a L/R angle. Since the engine oil was
resting to one side when I started the van I assumed this was the
cause but it wasn't.

Before the issue started, I'd replaced ~ 1/2 the section of wire from
the high pressure switch to the white 2 pin connector. After the issue
started, I replaced the entire length of brown wire between the high
pressure sensor and white 2 pin connector. The issue has not happened
since then. That wire was quite corroded.

I linked to it in my first reply but gowesty has a good article on the
oil pressure system. Included is reference to the brown wires from
each oil switch. GW sells replacement parts to address that.

Neil.

On 7/31/17, moritz schmid <schmidm90@gmail.com> wrote:

> I had an issue with the buzzer this weekend that I have not yet completely
> figured out. I drove my Syncro to Portland, ME (140ish miles) no issue.
> When I started the ride home the buzzer came on as soon as I pulled out of
> the driveway and then went off 2 minutes later. I stopped for fuel on the
> way home and then it came on again and this time did not shut off. I pulled
> over immediately again and double checked the oil etc (all good, no
> gasoline smell). Started up and the light stayed off and I made it home.
> Started the bus yesterday again to check everything and the light was on
> again (once you rev it over 3k). I ordered the replacement high pressure
> sensor as well as the oil filter adapter plate to install a pressure gauge
> to get to the bottom of it! I have checked all the wiring to the sensor and
> it all tests out/I replaced it. Will keep everyone posted/share my write-up
> once I get the gauge and new sensor installed.
>

--
Neil n

Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>

1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>

1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>

Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>