It could be coolant level sensor acting up, can be removed and cleaned(metal
part), try it first. Will need to replace o-ring gasket to prevent leaks. It
could also be old coolant triggering sensor due to changing capacitance. May
be time to change coolant.
Leon
85 Subwagen Westy

Brett Ellingson wrote:

> My 87 westy's coolant temperature gauge warning light has been
> flashing.  After about 45 freeway miles, the light began flashing.  I
> pulled over, checked the coolant levels and v-belt and the fan,  all was
> seems fine.  The needle on the temp gauge was not riding past the half
> way point.  I don't think the engine was overheating.  Is there a
> sensory component that could be haywire?  As soon as I turn off/restart
> the engine, the light stops blinking for about 45-100 miles.  Any
> suggestions would be appreciated.
>
> Thanks
> Brett Ellingson
> 87 westy