JH Engine oil pressure issues

[txrocco at sbcglobal.net (ATS - Patrick Bureau)]

I am not sure of the reason, but indeed when you start the JH, it pegs at
4.5 bar easy for first 5 mins (until oil indicated 50'c on my car anyways)
then slowly drops to 1.5.bar, which is weird because all previous cars I
had, had low oil pressure until it warmed up (oil thick enough = slow at
first? I figure)

The one time I had an issue was when I was running 10w30 for winter, an
summer came I poured 20w50, and the oil light would not go away, I put in a
36mm hub oil pump in (hydraulic lifters oil pump - yes it is an upgrade for
the JH mechanical engine) and after I restarted the engine with 20w50 in,
light blinks on for 2-3 seconds and never came back since..

now as for oil pressure, I would double check by replacing the lower and
upper sensors for the oil (one on the flange and one on the head) and see if
they may not be the culprits.

hope this information helps, and I am sorry if I am repeating someone else's
diagnostic. (sort of reading/sort of deleting messages)

ATS - Patrick Bureau - txrocco@sbcglobal.net
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=>-----Original Message-----
=>From: scirocco-l-bounces@scirocco.org
=>[mailto:scirocco-l-bounces@scirocco.org]On Behalf Of T. Reed
=>Sent: Monday, September 29, 2003 2:16 AM
=>To: John Lagnese
=>Cc: calimus; Scirocco-l
=>Subject: Re: JH Engine oil pressure issues
=>
=>
=>Yeah, I second that. Pull the pan..
=>
=>My oil pump intake screen was absolutely -clogged- with pieces of blue RTV
=>that someone had sealed up the pan gasket with. I picked them all out with
=>tweezers and my oil light/buzzer stopped misbehaving.
=>
=>I can't remember why (please enlighten me!) but VWs are notorious for
=>having very high oil pressure during startup. Maybe a combination of that
=>and the above is giving you adequate pressure the first few minutes and
=>then it's dropping off as the car warms up.
=>
=>-Toby
=>
=>On Sun, 28 Sep 2003, John Lagnese wrote:
=>
=>> There could be crap in the oil pan. Especially after flushing it. If you
=>> turn the motor off after the engine is warm is the pressure
=>still low? If
=>> not, pull the pan.
=>> John
=>> ----- Original Message -----
=>> From: "calimus" <calimus@techography.net>
=>> To: "Scirocco-l" <scirocco-l@scirocco.org>
=>> Sent: Sunday, September 28, 2003 3:57 PM
=>> Subject: JH Engine oil pressure issues
=>>
=>>
=>> > This is a bit OT as it's for the wifes cabby, but hey, it could be a
=>> > scirocco if you use your imagination.
=>> >
=>> > Ok, a week or so I posted a similair question, but now I'm in
=>the thick of
=>> > things and doen't like what I see.  Both the cars internal gages and a
=>> > manual oil pressure gage tell me that after about 15-20min the oil
=>> pressure
=>> > in the head at idle drops to just below 0.5bar on the vdo
=>gage and on the
=>> > manual gage it's so close to 0 I really wouldn't know what to call it.
=>> Now
=>> > this is after bumping the oil up to 20w-50 since the PO's had
=>10w-30 in it
=>> > before.  I also flushed the motor twice to make sure all the
=>gunk would be
=>> > out of it.
=>> >
=>> > So I figured that it might be the pump (which documentation shows was
=>> > replaced in 97' and only 7k miles put on the car since then, but since
=>> they
=>> > had it done at a shope I was wondering if it had really been
=>done) so I
=>> tore
=>> > the pump out of our wrecked cabby since i knew it was good,
=>then dropped
=>> the
=>> > pan on the new cabby and there sites a bright shiny brand
=>new'sh febi oil
=>> > pump.  Now I'm conserned since the pump looks like it was just put in
=>> > yesterday, could it really be bad?  If figure I'll go ahead
=>and swap the
=>> > pumps and see what happens, but I need to know where else I
=>could develope
=>> > an oil pressure problem in the head after about 15-20min of good 3bar
=>> > pressure.  Now the pressure doesn't fall like a rock, but after about
=>> 10min
=>> > is starts to drop down as the oil temps reach about 80c.  I'm
=>kinda at a
=>> > loss since on cold start pressure is good then falls off.  So if you
=>> > guy's/gals can hit me back with things that I can check to
=>try and figure
=>> > this out, I would be very gratefull.
=>> >
=>> > Thanks,
=>> > William Snyder
=>> >
=>> > 88' Scirocco 16v
=>> > 89' Cabriolet 8v (R.I.P.)
=>> > 71' Karmann Ghia
=>> >
=>> >
=>> >
=>> > _______________________________________________
=>> > Scirocco-l mailing list
=>> > Scirocco-l@scirocco.org
=>> > http://neubayern.net/mailman/listinfo/scirocco-l
=>>
=>>
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=>>
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