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Date:         Thu, 10 May 2012 17:16:49 -0700
Reply-To:     Richard Koerner <rjkinpb@SBCGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Richard Koerner <rjkinpb@SBCGLOBAL.NET>
Subject:      Re: Oil Pressure Lamp? Denoument.
Comments: To: Dennis Haynes <d23haynes57@hotmail.com>
In-Reply-To:  <BAY152-ds9055DAC57160FFA450979A0160@phx.gbl>
Content-Type: text/plain; charset=iso-8859-1

YES!!!  All Warning Lights bright at turn of key before starting!!!  All go off after starting, sometimes a blip of throttle to make go off, been like that for 24 years since I bought Vanagon.

Rich San Diego

--- On Thu, 5/10/12, Dennis Haynes <d23haynes57@hotmail.com> wrote:

From: Dennis Haynes <d23haynes57@hotmail.com> Subject: RE: Oil Pressure Lamp? Denoument. To: "'Richard Koerner'" <rjkinpb@SBCGLOBAL.NET>, vanagon@GERRY.VANAGON.COM Date: Thursday, May 10, 2012, 4:25 PM

Does the Warning light turn on brightly with the ignition on before the engine is started? If moisture can make a change in any electrical circuit you have an insulation breakdown that needs to be addressed. Stop fooling yourself.

Dennis

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Richard Koerner Sent: Thursday, May 10, 2012 6:08 PM To: vanagon@GERRY.VANAGON.COM Subject: Re: Oil Pressure Lamp? Denoument.

I concur!  Moderator David B. yesterday correctly diagnosed the faint dull red glow in my oil pressure LED as possible moisture in the circuit; turns out I had used a hose to gently wash off the engine compartment and must have got some on the sender.  Once engine came up to temperature, the moisture evaporated away and so did my false indicator light.

Rich San Diego

--- On Thu, 5/10/12, Rocket J Squirrel <camping.elliott@GMAIL.COM> wrote:

From: Rocket J Squirrel <camping.elliott@GMAIL.COM> Subject: Re: Oil Pressure Lamp? Denoument. To: vanagon@GERRY.VANAGON.COM Date: Thursday, May 10, 2012, 2:45 PM

Wet oil pressure switch?

Yesterday we put new coolant into my 1.9. Using a "Libby Bong" one can get quite a gusher out of the bleeder in the engine compartment. Coolant washed over the oil pressure gauge sender and oil pressure switch which are moved above the left head when using tencentlife's adapter setup, which I am.

Drove the van briefly yesterday, and there were no warning lamps, everything read okay. But this morning, I needed to move the van a couple hundred feet and the oil pressure lamp did not go out even though the oil pressure gauge read normally. But the lamp was not on at full power, either: it was only at half-brightness.

I had to run a bunch of errands in Mrs Squirrel's car in the morning, but after lunch I brought the van back to the driveway, and the oil lamp was quite dim, but not out. Turned off the engine, connected a voltmeter to the switch's "hot" terminal and turned on the ignition w/o starting the engine. Read about 0.5V. Started the engine. Read 10.5 volts. Puzzled I check the dash lamp -- dark. Revved the engine to kick in the alternator and the voltage rose to about 11.5 or 12V and the lamp, of course, was dead dark.

Took it for a long drive, no sign of spurious lamp lightage.

It's my theory that the oil pressure switch was soaked with coolant and offered a sufficiently low enough resistance to allow current to flow through the lamp to cause it to partially light. Then it dried out.

Even though a brief check with an ohmmeter showed that a 50/50 mix of G-05 coolant is about as conductive as distilled water, this is my story and I'm sticking to it.

-- Jack "Rocket j Squirrel" Elliott Bend, Ore. 1984 Westfalia. A poor but proud people. 1971 "Ladybug"-brand utility trailer ca. 1972 from a defunct company in San Clemente, Calif., now repurposed as The Westrailia.


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