Oh, but to answer your original question, the oil relief plungers/bores
rarely "wear", and even if they did, they don't cause the buzzer. Worn
out motor, worn out oil pump, and thin oil do cause the buzzer, in worst
case scenario. Every time you start/drive your car you are wearing out
the parts that keep oil pressure higher.

But VW flat four's have a hyperactive warning sensor. You can idle a VW
flat four motor with nearly no oil pressure without harm. It only
becomes an issue when you put it under load.

Bringing your ideas to life,
G. Matthew Bulley
Bulley-Hewlett
Business: www.bulley-hewlett.com
AIM = IExplain4u
Phone: +1.919.658.1278

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf
Of Mark Keller
Sent: Thursday, October 03, 2002 11:03 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Does a worn pressure relief valve cause Oil pressure buzzer?

Stuart,

I am having this issue on occasion, with similar conditions: heat
soaked, i.e. long climb, Mobil 1 syntheitc and get the buzzer just after
letting off of the throttle, i.e. cresting the hill.  I'm also having
very infrequent but associated with the buzzer episodes a split second
valve clatter like once a year, but it will happen two or three times
then not again for a year.

Can you shed any light on the possibility of these events being caused
by a worn pressure relief valve.

Sincerely,

Mark Keller
91 Carat