I encountered same oil pressure idicator problem last year accompanied by an
irritating buzzer.  First I checked the oil pressure with an analog guage
and found sufficient oil pressure.  I deduced I must have a bad sensor.
After replacing all the sensors, the problem still existed.  Logically, this
left the console as the culprit.  Next I installed an oil pressure guage and
ripped out the buzzer and LED corresponding to my problem.  I've been fine
for over a year now.

Sean
87 Westy

>From: "Richard Meissenheimer (by way of Derek Drew
><drew@interport.net>)" <bonnie_baker@TELUS.NET>
>Reply-To: "Richard Meissenheimer (by way of Derek Drew
><drew@interport.net>)" <bonnie_baker@TELUS.NET>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Euro-Elec: 91 Volkswagen Vanagon, idiot lights, oil light
>Date: Sat, 15 Jan 2000 09:51:46 -0500
>
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>
>1991 Volkswagen Vanagon 2.1 L
>
>Trans:         Standard
>Mileage:       200,000 kilometers
>VIN:           WV2ZB0256M
>
>Misc Data:     Synchro
>Affected Item: oil light
>Condition:     flashing
>
>____________________________________________________________
>
>After installing replacement engine, oil light flashes when
>engine is warm and idling. I installed a new grey oil
>pressure sensor in the port below the water pump. This did
>not change anything. I then found out that there is a
>second oil pressure sensor between the push rod tubes on
>the left side of the engine. I replaced that one with a
>known good grey switch. This did not change anything. I
>have not checked the actual pressure because I do not have
>the necessary adapters for my oil pressure gauge, and also
>because of the inaccessibility of the ports. I measured the
>resistance of the switches and found them to be 2.5k with
>the engine off and about 400 with the engine running. Can
>anyone explain to me how this system works? Things were so
>much simpler when VW's used air to cool their engines!
>Thank you in advance.
>
>
>Richard Meissenheimer
>bonnie_baker@telus.net
>Technician/Shop Foreman
>Lakeside Auto Sales
>Nelson, British Columbia, Canada
>
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