I have a 1986 vanagon with an oil pressure light and buzzer which comes on
when the vehicle is warmed up and is above 2000 rpm.  It will also go out
around 3500 rpm.  The engine was rebuilt about 30k ago and the light came on
immediately.  When the mechanic was called about the problem, he said that he
must have put the wrong oil pressure switch in.  It has been run like this for
30k without any problems, but I want to fix the problem (better late than
never.)  I decided to upgrade to a VDO guage and sender from the Bus Depot,
but the guy I talked to on the phone didn't seem like he had any idea what was
going on.  He told me that they did not sell the stock switch, and that the
only thing they had was the VDO switch and guage.  He also told me that their
VDO guage is not the dual guage (allowing both the idiot light and guage to
operate) which is in contradiction to their website.  In checking their
website I have found both of these statements to be false, but in their
defense, the man said Ron was gone and would return in a few days.  He said I
should call him about any specific questions.  Since I am still unable to get
any answers at the Bus Depot I thought I would try the list.

1.  Is the dual VDO guage set at .9 or 1.8 bar?
2.  Is it normal for an engine with the improper switch to flash it's idiot
   light?

Thanks,
Patrick