I noticed I never replied to this email with my result.

Mark was right on.  I just hadn't waited long enough.  My sensor
circuit seems to be functioning fine.

Thanks for the help!
-Wes

On 4/6/08, Mark Drillock <mdrillock@cox.net> wrote:
> How long did you wait? After disconnecting the sensor it normally take a
> short while for the relay to trigger the light. This is to reduce the
> false alarms. 30 seconds should be more than enough.
>
> If the light still does not start blinking you may have a missing relay.
>    There are a few other possibilities as well. Someone may have
> disabled it to stop alarms they could not figure out how to fix. Pulling
> out the relay is the surest way to stop the alarm from triggering.
>
> Mark
>
> pickle vanagon wrote:
> > I have been wondering whether my coolant level sensor is faulty, since I
> > don't remember every seeing it come on when I've done coolant flushes,
> etc.
> > My understanding was that the sensor is just a conductivity sensor, so
> that
> > unplugging it should make the system think the coolant is empty.  However,
> > when I unplugged mine, and then started the van, the light flashed for a
> few
> > seconds like always, then went out as always, seemingly suggesting that
> the
> > level is fine.  What could be going on here?
> >
> > Thanks,
> > Wes
> > '83 westy
> >
>