[Diy_efi] oil press.

[Buck Williams]

ifff u go tto the trauickk wreckerss u can usally get,,,entire panel fulll 
of high doallalr guages for minaimaum,, i just recentlyyy bought full 
perterbuiltt panell full, 15-16 guagges for 20.00, tach, speedao, 
prrometerr, oil, tranns and rear gear iol temps, full set,, all were 
st4ewaart waranerr, buck


>From: Rick McLeod <dunvegan at sbcglobal.net>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: Re: [Diy_efi] oil press.
>Date: Tue, 15 Nov 2005 12:11:19 -0800 (PST)
>
>Essentially, there are 2 components: 1st is the
>sensor, 2nd is the indicator.
>
>The sensor is simply a pressure sensitive variable
>resistor to ground (gennerally high resistance = 0psi,
>low resistance = max psi), and the indicator is a
>calibrated current meeter.
>
>Therefore, a micro/milli ampmeter w/ it's + terminal
>connected to ign+ and in series w/ a calibration
>resistor in series w/ the sensor which is connected to
>ground will work. Adjust the calibration resistor so
>that the meter deflects to 1/2 to 2/3 scale w/ max
>good oil pressure, and you'll see it drop at idle to I
>suspect 1/3 to 1/2 scale, then you have a system. It
>is not necessary to know the exact psi in your case,
>as much as knowing it's good today, and have an
>idication of impending disaster before it becomes a
>China Syndrome!
>
>Good luck, simple ohm's law will help determine the
>values of resistor, which should not be greater than
>the value of 0psi resistance of the sender, more
>critical is the guage should match the sendor.
>
>If all this sounds complicated, then 40 coin sounds
>cheap to me, also I drove a VW for 5 years w/ a faulty
>oil sender by using a mechanical guage, ran a small
>ptfe tube from a T on the sendor to a small guage
>under the dash, when the factory sendor failed, it
>caused a buzzer to sound, so I glanced at the
>mechanical guage to verify if it was a real or false.
>BTW, replaced every component in the circuitry on that
>car 3 times, never could cure it, but always had
>pressure. Cost of the mechanical guage was ~15 coins
>US.
>
>HTH - rick
>
>--- "Lee M. Lemoine" <llemoine at gmail.com> wrote:
>
> > There are several types of these available from
> > manufacturers such as VDO,
> > Autometer, and your local pepboys/autozone can
> > probably order them too ;)
> >
> >
> >
> > On 11/15/05, Ian Molton <spyro at f2s.com> wrote:
> > >
> > > Hi guys.
> > >
> > > not strictly on topic, but I thought you might be
> > able to help...
> > >
> > > Im looking for an electronic oil pressure sensor
> > and dash guage pair for
> > > my car. cheap is good as long as its reliable and
> > reasonably accurate.
> > > _______________________________________________
> > > Diy_efi mailing list
> > > Diy_efi at diy-efi.org
> > > http://lists.diy-efi.org/mailman/listinfo/diy_efi
> > >
> >
> >
> >
> > --
> > Sincerely,
> >
> > Lee M. Lemoine
> > http://www.turbochargedsoul.com/
> > > _______________________________________________
> > Diy_efi mailing list
> > Diy_efi at diy-efi.org
> > http://lists.diy-efi.org/mailman/listinfo/diy_efi
> >
>
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