John, I just dealt with that issue a few months ago. And dealt with
it. And dealt with it. Swapped out sensors, cleaned connections, on
and on.

I solved it by taking apart the instrument cluster housing and
swapping out the temp unit for a good one. That fixed the problem.
There is a capacitor in the instrument that has gone bad. You can get
advice on how to replace it on the list, but it is easier just to swap
out the unit.

Jim

On Sun, Sep 6, 2009 at 2:39 AM, John Rodgers<inua@charter.net> wrote:
> OK, it's the wee hours after mid-night here - and I can't sleep - so I'm
> thinking up things about Vanagons.
>
> I've got a coolant level sensor light that comes on at startup (as it
> should) but never goes out (as it should) after just a few seconds of
> running. When the engine is cold, the light goes out just after
> starting. But �if the engine has been run - and you stop then start it
> up again right away - that silly light comes on and never goes off -
> just blinks, blinks and blinks. Makes me worry about coolant, even when
> I know there should be no problem. �I've checked the sensor in the
> expansion tank and it's OK. So what else - and how else - do �I check,
> and if I need to replace something - what is it?
>
> Thanks,
>
> John Rodgers
> 88 GL Driver
>