In a message dated 7/18/02 11:25:47 PM, msipple@ATTBI.COM writes:

> is warmed up and I slow down to under 2200 rpm's the oil pressure light
> and buzzer sound off.  Once I accelerate back over 2200 rpm's the buzzer
> stops.
>
> My mechanic tested the actual oil pressure and assures me it's fine.  He
> thinks the wires or sensor is not working correctly.  I have never
> experienced a problem like this before.  It started with the installation
> of the new engine.

Normal issue is, the wrong weight of oil (10w30 oil in a Vanagon will almost
always cause this once the engine has gotten warm.) However, it isn't
impossible that the oil pressure switch has gone bad. My '86 Syncro had one
its pressure switches go bad last year...most annoying to figure out....since
it has TWO of them (I think the regular Vanagons have but one)...and the shop
kept checking only one of the switches...until I suggested the other one
might be the problem.