Had a similar problem here with the GTI.  Dealer says that the oil pressure
is getting marginal and shows up at 2200 rpm because of the of the dual
pressure sensor system.

Running the stock Mahl/Mann oil filter seemed to lessen the incidence of
oil pressure light comming on.  Dealer says that the stock filter has a bit
more back pressure, hence resulting in a slightly higher pressure in the
system.

Ch

'89 SyncroBeast Vanagon - Soon to come - New Shocks for the Syncro!
                                 Soon as I get rid of the rust.  ugh
'87 16V GTI
'80 850 Yamaha Special
'87 16V GTI w/ hale damage - parting out - body gone, parts remain
'89 16V GTI w/ toasted motor
'86 Scirocco (8 valve w/ auto) - SO's - now w/ it's own hale damage

Prior Lake, MinneSnowta  -  Brrrrrrr!  Winter's here.

**** SNIP ORIGINAL ****
Date:    Thu, 2 Mar 2000 19:16:19 -0600
From:    Chuck Kuecker <ckuecker@MCS.NET>
Subject: Oil pressure gremlin

Hi,

I have had a strange problem develop on my '91. At a narrow range around
2000 RPM, the oil pressure warning light and buzzer come on. Above and
below this range there is no problem. As soon as the street parking
restrictions are lifted around here, I plan on replacing both oil pressure
switches. Just wondered if anyone has seen a similar problem. At first I
thought it might be an intermittent pinched wire, but the wiring harness is
in good shape.

Chuck Kuecker
Cary, Illinois

ckuecker@mcs.net

'83 Scirocco (Katy's car now)
'58 Ghia Convert (rolling again!)
'75 Bug (Chris' daily driver)
'67 Bug (blew second gear!)
'69 Ghia Convert Project (under wraps for the winter...)
'63 Bug (Chris' first car)
'91 Vanagon