The PO of my Cabriolet grounded the wire to the high pressure sensor.  Everything except the buzzer still worked fine.

Bill

---------- Original Message ----------------------------------
From: Jonathan Farrugia <jfarrugi@UMICH.EDU>
Reply-To: Jonathan Farrugia <jfarrugi@UMICH.EDU>
Date:          Tue, 4 Apr 2006 12:52:12 -0400

>what does your oil pressure measure?
>
>jonathan
>
>On Tue, 4 Apr 2006, Tim Leek wrote:
>
>> Vanagon people,
>>
>> I have an 87 Vanagon that likes to buzz at me and flash the oil light
>> after 15 minutes.  Super annoying.  Wife wants me to sell the piece
>> of $*&#$.  Oil pressure is fine (according to click and clack).  Yes,
>> I've replaced both oil pressure senders.  No, I don't have time or
>> money to diagnose the wiring harness or that dynamic oil pressure L-
>> board behind the speedo.
>>
>> So ... I'm looking to disable the buzzer somehow.  Here are the
>> options as I see them.
>>
>> 1. Short the 0.9 bar sensor where it comes into the L-board to
>> ground.  This works, i.e. if I pull over whilst the buzzing is
>> happening and do this, the buzzing stops.  But is this a bad idea
>> somehow?
>>
>> 2. Remove that stupid L-board, since (after staring at the wiring
>> diagrams) doesn't it just serve to warn you when the oil pressure is
>> not in spec?  I can't see how it actually "controls" anything.
>> Unfortunately, I've tried this and it means I can no longer start the
>> car.  Perhaps I can't just take it out without jumping some magic
>> wires together?
>>
>> 3. Find the buzzer and kill it dead.  Okay, so where the hell is it?
>> Is it the wee electro-mechanical looking device on one end of the
>> aforementioned L-board?  Is this bad idea since that buzzer wherever
>> it lives buzzes when other bad things happen that I may want to know
>> about like engine getting too hot.
>>
>> I'm leaning toward 1.
>>
>> Help!
>>
>>
>