[Vwdiesel] Oil Pressure idiot light & buzzer

[Shawn Wright]

In the 85-92 Golfs, the buzzer should only come on when the pressure is below the high 
switch cutoff (either 1.4 or 1.8bar), AND the engine RPM is over 2000. This is an effective 
system, so if the buzzer does go off, and you are not at idle, it should be looked into to avoid 
possible engine damage. One common cause of low hot oil pressure I've seen is failed 
intermediate shaft bearings.

On 8 Jun 2007 at 11:18, William  Longyard <longyard at ix.netcom.com> wrote:

> My buzzer and idiot light come on at about 25psi, which is way too high. 
> I'm hoping the sender is bad, but I haven't had time to swap it out.  It is VERY
> annoying.  A Volvo engineer friend told me that you only need 10psi per 1,000
> revs (at the most).  So if you're idling at 800 rpm you only needs 8lbs of oil
> pressure.  My 25 lbs is plenty.
> 
> Bill Longyard
> 
> 
> ----- Original Message ----- 
> From: "Pam & Doug Boes" <db53248 at alltel.net>
> To: <vwdiesel at vwfans.com>
> Sent: Thursday, June 07, 2007 5:59 PM
> Subject: [Vwdiesel] Oil Pressure idiot light & buzzer
> 
> 
> > My daughter's Golf diesel started showing the oil pressure idiot light and
> > warning buzzer yesterday. When the engine is cold, the light doesn't come on.
> > After driving for awhile the light starts flickering and the buzzer goes off.
> > I had her top off the oil and drive it home. It doesn't smell hot like there
> > is no oil circulation and the water temp gage shows normal.
> >
> >
> >
> > Do the sender units on the N/A engines degrade before failing completely? I've
> > asked a couple of gearheads and they all say to get a gage and connect it to
> > the sender ports to see what the pressure actually is. How likely are worn
> > bearings, etc that would be too sloppy to maintain oil pressure after the
> > engine is warmed up? There doesn't seem to be any corresponding drop-off in
> > performance when the light comes on. I'm planning to get a gage & check the
> > actual pressures at each port and change both sender units to see if that
> > cures the problem.
> >
> >
> >
> > Any other suggestions?
> >
> > _______________________________________________
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> > Vwdiesel at vwfans.com
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> 
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Shawn Wright
http://members.shaw.ca/vwdiesels
'88 Westy 1.6TD 5 speed
'85 Jetta Diesel 1.6NA