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.

On Mon, Jul 31, 2017 at 1:37 AM, Gabriel Hourtouat <ghourtouat@gmail.com>
wrote:

> Back at home, safe and sound.  No further incidence of the illuminated oil
> light after an oil change, and remove, clean and reinstall of the
> same O.P.R. spring and valve.
>
> -Was it the oil change?  Is there an intermittent short that is yet to be
> found, compounded by the rain?  Was there some crud keeping the OPR from
> closing?  Will this recur as soon as the new oil begins to break down?
>
> -Thanks for your comments.  Lots to delve into.
>
> -I'm thinking about an oil pressure gauge.
>
> Cheers,
> gab
>
>
>
> On Sun, Jul 30, 2017 at 12:10 PM, Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
>
> > Details! They make the difference. You need to know how it works when all
> > is normal to know what to do when it doesn't. This oil pressure relief
> set
> > goes all the way back to early Beetle days when so many high performance
> > places were selling the oil pressure boost relief springs and plungers.
> > Let's twist some pump shafts and blow up coolers!
> >
> > Dennis
> >
> >
> > -----Original Message-----
> > From: OlRivrRat [mailto:OlRivrRat@comcast.net]
> > Sent: Sunday, July 30, 2017 11:55 AM
> > To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
> > Cc: vanagon@GERRY.VANAGON.COM
> > Subject: Re: Oil pressure light and buzzer
> >
> > On 30 Jul , 2017, at 9:39 AM, Dennis Haynes wrote:
> >
> > > The oil pressure relief valve begins to relive excess pressure
> somewhere
> > around 45-55 psi. This is dependent upon spring length and tension.
> Weather
> > the released spring length is 60 or 62.5 mm is not going to make a
> > significant difference. Depending on the oil pressure switch used the oil
> > light flickering at low speed or idle is indication that the oil pressure
> > has dropped below 3 to 5 psi. So whether the relief spring is working at
> 30
> > or 40 or 50 psi it just doesn't matter. So a new spring is not going to
> fix
> > anything.
> >
> >         Thanks DH ~ I was about to bring up that point ~ But not with
> that
> > Great Detail ~
> >
> >                                                         ORR ~ DeanB
> >
>