Date: Tue, 1 Oct 2002 11:16:46 -0700
Reply-To: kevin obrien <kevindobrien@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: kevin obrien <kevindobrien@YAHOO.COM>
Subject: Re: Oil pressure mystery, resolved???
In-Reply-To: <B9BE7A31.B5A2%ben@kbmc.net>
Content-Type: text/plain; charset=us-ascii
Ben:
Whatever the problem is mine sounds identical. I've
been trying to resolve an overheating problem on
uphill grads for some time. In addition (long before I
had the overheating issue) When I drive up the long,
uphill 5 mile road approaching my house the oil buzzer
goes off like clockwork as soon as I crest the hill
and pull into a smaller side road (rpm decrease). It
ewill buzz until I put automatic trans in nuetral and
rev the engine.
Also...If I cruise at about 55 and then decelerate to
make a turn...it sometimes goes off. My engine (one I
bought from VW) has @ 75K on it.I recently installed a
VDO Oil Pressure Gauge...some Readings:
Start Up 55-60 psi
At idle (warm)...low...like 8-10psi
30psi cruising at 50-55.
At the crest of the 5 mile-uphill pressure drops to
@ 20 psi as I crest...and the buzzer sounds...so it
seems I have appropriate pressure.
Also...I had a new oil sensor switch installed awhile
back... has not solved the issue.
Let me know what you find out.
kevin
--- Ben McCafferty <ben@KBMC.NET> wrote:
> Well, as you know I've been trying to chase down the
> oil light/buzzer issue
> for a while. Mine occurs when exiting the highway,
> coasting in gear down to
> lower rpms; or when climbing hills at low rpms (i.e.
> approaching 2000 from
> above).
>
> I installed the VDO 80psi gauge from egauges.com,
> and got the dual terminal
> sending unit. I used Bill Davidson's great article
> from vanagon.com, with a
> couple of minor modifications--wanted to be able to
> remove the engine tin
> without removing the sender, so I notched the tin
> instead of just making a
> hole, and used a 5" hose instead of 3.5". It works
> great, and no leaks.
>
> Now then, just took a trip through western CO, and
> had lots of opportunities
> to pull mountain passes and load up the engine. I
> am running Mobil 1 15W50
> synthetic (2.1L WBX). I did get the light/buzzer to
> come on several times
> while climbing passes. Every time it happened, the
> gauge read 20 PSI on the
> nose. No fluctuation. So I'm confused. If there
> was a sudden drop in
> pressure (to activate the idiot light), wouldn't
> there be a corresponding
> drop in pressure on the gauge??? Is 20 PSI a
> threshold for the idiot light,
> i.e. the engine should never drop below that? If
> that's the case, why can I
> idle at 8PSI with no idiot light?
>
> Anyway, I was glad to see that I did in fact have
> pressure, but I would be
> glad to hear theories about what's really going on.
>
> tx,
> bmc :)
> "Faith will move mountains, but you'd better bring a
shovel...."
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