In a message dated 05/02/2007 6:07:40 P.M. Eastern Standard Time,
LISTSERV@GERRY.VANAGON.COM writes:

THis  happens to me all the time
after oil changes. Particularily when backing  off the throttle onto an
onramp. If I blip the throttle it usually goes  away.

This is the way the dynamic  oil pressure system works.  It checks the oil
pressure on deceleration at  between 2000 ~ 3000 rpm.  If the pressure is not
correct the alarm  sounds.  blipping the throttle is revving the engine, revving
the engine is  boosting the oil pressure because the oil pump is connected to
the engine which  is now revving higher so the pump volume and pressure
increase.  This does  not mean there is not a problem.  A true check of the oil
pressure is  needed in these circumstances. This is why I advocate having a
"real" oil  pressure gauge installed on the dash so you can actually see what's
going  on.    Once the oil pressure has been verified correct then you  can go
looking for other causes of the problem such as faulty hi oil pressure  sender,
wiring, dynamic oil pressure receiver, oil, filter, etc.

Cheers,

Frank  Condelli
Almonte, Ontario, Canada
'87 Westy, '90 Carat, '87 Wolfsburg  (Forsale) & Lionel Trains (_Collection
for  sale_ (http://members.aol.com/Fkc43/trainsal.htm) )
Vanagon/Vanagon Westfalia Service in the Ottawa Valley
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_Vanagon  Stainless Steel Exhaust Systems_
(http://members.aol.com/Fkc43/stebro.htm)
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camping event, Almonte, ON, June 07 ~ 10,  2007