Re: Oil Pressure Issues

["Ian Overholt" <ioverholt@hotmail.com>]

<x-flowed>I've got two suggestions.  I remember someone else recently who had an oil 
pressure problem with a new oil pump.  Maybe it was two separate people, 
actually.  I think one person had the new pump fail on him.  The other 
person had the pump mounting bolts back out almost all the way.  Either way, 
you have to pull the pan again and look at the pump.  Sorry.  :)  There is a 
chance that the oil light is coming on falsely, but if it was doing that I 
wouldn't think that increasing the RPM would make the light go off.  You 
could reach up behind the dash and try reseating the connector on the tach.  
That is where the circuitry for the oil light and buzzer is.  Oh, and 
another question, what is the climate like where you are and what oil are 
you using?

On the temperature side, did you replace the thermostat?  I put in a lower 
temperature thermostat and it does a great job of keeping the water temp 
below the LED.  Dropped the oil temp by 10 degrees too.  I can't remember 
what the value of the thermostat is.  I think it's 165, but someone else 
probably knows for sure.  When in doubt about what parts are available, call 
or email the list vendors.  Mike and Mark have all that info and great 
prices too!

Ian Overholt
'88 16v
'78 Sidewinder


----Original Message Follows----
From: "Christian Els" <tiAn@usiw.net>
Reply-To: "Christian Els" <tiAn@usiw.net>
To: "scirocco list" <scirocco-l@scirocco.org>,<Mk1gti@onelist.com>
Subject: Oil Pressure Issues
Date: Sun, 14 Nov 1999 11:25:16 -0600

I've finally sorted nearly all of the miscellaneous problems that 10 years
of neglect from the PO wreaked on my car. One has arisen though that has me
baffled.

Car is an 87 Scirocco 16V. I bought it not running (well, badly anyway...)
and did a complete rebuild, top and bottom, of the motor. While I was in it
I replaced all the major components (oil + water pump, timing
belt/tensioner) to bring it back up to "factory" specs.

I have been driving it for about 500 miles now dialing in the injection and
timing and suddenly have encountered problems with oil pressure.

PROBLEM: When cruising in traffic at around 2000 rpm (steady throttle/light
load) the oil pressure idiot light and chime come on.

Clutching and blipping the throttle up over 3k temporarily corrects the
problem.

Idling, even at 2k or higher revs, with no load on the motor, does not
manifest this behavior. Nor does moderate or full throttle acceleration, or
steady throttle operation at >2500 rpm, such as highway driving.

Since this car is intended to be my wife's daily driver, and the daily drive
is exactly where this behavior occurs, it is immensely frustrating.

As I mentioned, I already have a new oil pump in it, so I am skeptical to
blame a weak pump. Anyone care to venture a yes or no to that idea?

I have also noticed that the oil temperature runs higher than in my previous
16V, or any of my other 8v cars. Most of them are rock steady at 100 C, this
one runs just a shade over 110 C. Related?

Also the water temp on this car is running toward the hot end as well. Also
related?

I am tempted to put an oil pressure gauge in to see if the pressure is
really low but am too cheap just yet.

Alternately, has anyone experienced a failed sending unit that would mimic
this pattern? Common? Possible?

TIA

tiAn
87 16V
stuff.



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