I've seen a myriad of problems due to corrosion on the
14 pin dash connector.  Try cleaning the contacts and
printed circuit.

Tom

--- David Kao <dtkao0205@YAHOO.COM> wrote:

> I once had this problem on my 84. I had no clue and
> had no fix for it for
> over a year, maybe two. One day my odometer stopped
> working. I pulled the
> instrument cluster to get the odometer out for
> repair. It was repeated
> 4 or 5  times until the fix worked. Funny thing is
> the blinking coolant
> light problem never happened again.
>
> I then took an opportunity to look at the diagram of
> my Bentley manual.
> I found that there is an electronic device in the
> instrument cluster that
> I could only explain that it is for the purpose of
> turning the LED on and
> off for a few seconds after switching on the
> ignition.
>
> So my conclusion is the cause of the blink light may
> be the device in the
> instrument cluster. SO try to disconnect the big
> connector inside the cluster
> and reconnect it. Maybe there is a bad contact that
> caused the blinking.
>
> I could be wrong but this is easy to try.
>
> David
>
>
>
> --- Joel Cort <joel_cort@YAHOO.COM> wrote:
>
> > Guys,
> >
> > I am at my wits end with this.
> > On an 87 Westy with an automatic, and 81K.  The
> engine is tight and none of the hoses leak
> > coolant.  The coolant level is perfect.  I am
> having problems figuring out what to fix or
> > replace to make the frigin flashing coolant light
> stop.
> >
> > This is intermittent.  You start the van and it
> goes off after a few blinkies and other times it
> > will continue to blink for a long long time.
> >
> > The coolant tank is full, brand new, with a new
> cap and a new sender and good blue VW approved
> > coolant.
> >
> > The engine is not running hot and the temp needle
> runs right in the middle covering the stoopid
> > idiot light.
> >
> > I have played with the wires on the coolant sender
> and they are nice and clean and not frayed.
> > I have put some dielectric grease to keep the
> contacts lubed.
> > I have looked at the connector on the dash that
> connects to the blue foil and all contacts there
> > appear fine.
> >
> > Lastly I tightened the 7mm nuts on the back of the
> gages that connect to the blue foil on the
> > instrument panel thinking that their looseness was
> causing a faulty connection.  I was sure that
> > was the problem.
> >
> > All was well.... and it reoccurs.  The blinks the
> twilight zone.   AAAHrgg!  Help.  What and
> > where can I look to remedy this intermittent
> gremlin.
> >
> > Thanks
> > Joel in Rochester.
> > 89 Syncro Westy
> > 87 blinker
> >
> >
> >
> >
>
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