I run with the 2200rpm oil switch grounded to the engine block. BUT I have
an oil pressure gauge and I am very attentive to my gauges.  I have an oil
temperature gauge hooked up to where my high rpm oil switch was.

-Ry
http://www.google.com/profiles/rylincoln

On Sun, Aug 1, 2010 at 9:29 PM, Scott Daniel - Turbovans <
scottdaniel@turbovans.com> wrote:

> grounded wire for the high rpm oil pressure switch will keep the DOPS happy
> ..
> whether  there is oil pressure or not.
>
> if it's open to the high rpm switch ..
> the DOPS will think there's no OP at high rpm and set off the alarm.
>
> so if it shorts to ground..
> everything will look like it's ok...
> when you turn on the key, when at low rpm etc ..
> and you won't even know the high rpm portion isn't working ..
> if that wire gets grounded.
>
> there are lots of cars btw, running around with non-working oil warning
> lights.
> got one here right now ..
> 91 syncro ....2.1 ( 2.2 actually ) waterboxer engine.
> turn on the key, oil light does not flash.
> which means the low rpm portion is not working .........it's probably been
> that way for years without the van's driver/owners realizing the low rpm
> oil
> pressure warning isn't working.
>
> and it DOES say ..in the owner's manual..
> turn on the key, see the oil light flashing ....that's a test that it's
> working.
> many people do not notice non-functioning warning lights, evidently.
> I see it a few times a year on various cars and vanagons.
>
> and if the wire to a 2.1 wbxr engine's high rpm oil pressure switch is
> grounded ..
> there will never be any indication that's not working. It will look like it
> is, but it can't be of course.
>
> I know this since it's what we do for a   subaru engine installation ..
> just ground that wire , that keeps the DOPS happy for the high rpm oil
> pressure warning function.
>
>
> Scott
> www.turbovans.com
>
>
>
> ----- Original Message -----
> From: "Zolly" <zolo@FOXINTERNET.NET>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Sunday, August 01, 2010 11:13 AM
> Subject: Re: Oil pressure light and buzzer-Arrgh!
>
>
>  At that speed does the high pressure switch start working.  Or not.  This
>> time did not work.
>> Grounded wire,
>> Faulty switch,
>> Low oil pressure, (most unlikely)
>>
>> Sometimes a cupful of Marvel Mystery oil would get the switch work again.
>> Mostly not.
>> Zoltan
>>
>> ----- Original Message -----
>> From: "Larry Alofs" <lalofs@GMAIL.COM>
>> To: <vanagon@GERRY.VANAGON.COM>
>> Sent: Sunday, August 01, 2010 10:28 AM
>> Subject: Re: Oil pressure light and buzzer-Arrgh!
>>
>>
>> If it goes off only at rpms>2200, the engine tin should not be
>> involved.  The high speed sensor is at the rear of the engine near the
>> crank pulley.  Check the wire connecting to it and then check whether
>> it provides a connection to ground which changes with engine speed.
>>
>> Larry A.
>>
>>
>> On Sun, Aug 1, 2010 at 12:55 PM, David Clarkson <Dvdclarksn@aol.com>
>> wrote:
>>
>>> Time for some diagnostic work I'm afraid. In my ten years of owning my 90
>>> Westy I have never had this warning activate. It went off just yards from
>>> my
>>> driveway fortunately (thank you Van Gods). I checked it again this
>>> morning
>>> and it does magically activate at 2200 RPM's. I have perused that
>>> Archives
>>> and will set out to check all of the wiring and also for leaks at the
>>> sensors. Of course, I have 15w-40 Mobil 1, correct oil level , Mahle
>>> filter and
>>> no apparent issues with the oil itself. Quick check doesn't show any
>>> corrosion at the connector that splits off the wiring to each of the
>>> sensors.
>>> Not looking forward to possible removal of exhaust nuts to remove the
>>> engine
>>> tin. I have had some sort of slow oil leak from behind this tin so I'll
>>> check this too. Wonder could it be a leaking sensor? I had the van up on
>>> a
>>> lift cleaning off dye in the AC for a known leak at one of the condenser
>>> connections (another frustrating problem now secondary to this
>>> frightening
>>> issue
>>> ) then after driving about 15 miles home it went off and my heart sank.
>>> Just don't have the money in the budget for the Subi 2.5 transplant yet.
>>> The
>>> only other likely possibility not near the engine area that might explain
>>> this issue is the sometimes problematic 14 point ribbon connection at the
>>> speedo that is very fragile with a broken corner of the plastic that the
>>> ribbon folds over and the connector slips on to. According to the
>>> archives
>>> this
>>> connector carries the wiring from the sensors. Guess its time to get her
>>> up on ramps (don't want to drive back to work to use the lift should I
>>> have
>>> a true oil pressure issue) and scrape the knuckles and try not to use my
>>> outside cursing voice. The engine was rebuilt about 100,000 miles ago by
>>> The
>>> Bug Shop in Blacksburg, Va. -Plug for the Bug Shop and Jewel the
>>> owner-excellent rebuild IMHO. It was broken in on conventional Dino oil
>>> for the first
>>> 10,000 miles and then nothing but 15-40 Mobil One. Oil changed every
>>> 7,000
>>> miles and filter change every 3500 miles. I'll report back on my
>>> findings.
>>> Got to have her ready for the trip to the Outer Banks without breaking
>>> the
>>> bank in two weeks.
>>>
>>>
>>>
>>> David Clarkson
>>> 1990 Westfalia
>>>
>>>
>>
>>
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>>
>>
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>