The sender body must be grounded, be sure it is attached with it's metal
strap to something that is.  You can check for resistance change with
engine speed to see if it works, but it sounds like it's not grounded,
and you have infinite resistance, which will pin the needle to the
right.

james peters wrote:
>
> I bought my '80 Vanagon with 3 vdo gauges installed.
> Oil press/temp and voltage. After I had the heads and cylinders replaced the
> oil pressure gauge stopped working. The needle goes across the face and is
> buried to the right.
> Is my oil sensor bad? It's one of those type that have two posts.
> One post is connected to the idiot light, the other to the gauge. Is there a
> way to check the sensor?
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--
Stuart MacMillan
Manager, Case Program
800-909-8244 ext. 8208
Fax: 206-269-6360

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