There are a couple of ways to trick the little booger into behaving when
it want's to act up as mine is wont to do periodically.

Turn the ingnition key to the on position - turning on all the dash
circuits - but do not turn to engage the starter. The coolant light will
begin blinking. Count to 60 - like one thousand  one, one thousand two,
one thousand three, etc. When you reach "
0", engage the starter. Light should go out.

Apparently there is a resistance test circuit built into the thing and
it takes a few moments for it to do it's job of testing the resistance
between  the probes in the coolant tank. If the coolant bis below the
level of the probes - there will be an open circuit and resistance will
be infinity. The light will blink like crazy. If there is proper coolant
present - the circuit tests and recognizes the resistance, and the light
goes out. I have never read this anywhere, nor has anyone told me - but
I suspect that if you do not have the ratio of water to coolant within
the proper range, that silly light may blink - maybe. IE, to much
coolant for the water so the resistance is wrong - blinking light; to
much water, not enough coolant, so resistance is wrong - blinking light.
This is just my suspicion.

Regards the coolant - if your van is a 86 miodel or later with a 2.1L
WBX - and if you fill the cooling system, bleed it the best you can,
then leave the plug on the radiator slightly loose and drive down the
road, you will eventually lose enough coolant that the low level warning
light will come on. Don't ask me how I know this - just believe me. So,
armed with this new knowledge, deliberately drive it down the road until
the light comes on. Stop, tighten the filler plug, fill the overflow
tank and then let the engine cool. Start the engine and there should be
no coolant light to distract you. If there is any air left in the system
at this point, just normal driving should eliminate it through self
venting. The cooling system was designed to do that once nearly all but
not quite all air was removed.

Regards,

John Rodgers
Chelsea, AL

The Westy man wrote:
> Hi to all,
> After not using the car for a month, now the coolant light is blinking.  But after I pulled the 42 relay out, it stopped.  I somehow have the feeling, it is not the solution.
> Anyone?
> Zoltan
>
>
>