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Subject:Re: My Vanagon's blinking coolant light problem vs other peoples'---it all blends together
From:Neil N
Date:Fri, 12 Dec 2014 11:33:48 -0800

> ....   Not elegant, but I have better things to do than
> fiddle ...  repeatedly, with something the VW engineering didn't get
> quite right.

On my I4 swap, with a brand new coolant level warning module
installed, the first coolant gauge I installed had an intermittent
lingering blinking coolant light; if I left the bus sitting for a few
days, after starting the bus the light would stay on for a period of
time then go out. If bus driven daily, this didn't happen. This gauge
was 25+ years old from a higher mileage 1985 1.9; a failing coolant
level warning light capacitor is to be expected? I replaced this gauge
with one from what was likely a lower mileage diesel. This gauge has
been reliable.

On a recent trip in my I4 swap bus, while coasting down a long steep
mountain pass in Oregon, the coolant level warning light did exactly
what it was intended to do. It warned me of a low coolant situation.
Due to a certain level of engine swap arrogance on my part, and past
gauge history, I assumed the gauge was at fault, so keyed the ignition
on/off while driving. The light went out, but then came back on.
Indeed there was a coolant loss happening.

Image showing cause of the coolant loss (albeit a VERY slow leak) on
the Jetta coolant expansion tank installed in my swap:
http://tinyurl.com/p5pg5ex   I imagine this type of failure can happen
on the WBX expansion tank? I digress.

IMO, age of the part not withstanding, the coolant level warning light
in the Vanagon coolant gauge works as the VW engineers intended.

;)

Neil.

On 12/12/14, Don Hanson <dhanson928@gmail.com> wrote:

> Black tape will do the job.  Then you can figure a way to work around the
> coolant light.  I installed an oil temp gauge, used in tandem with my
> coolant temp gauge and my alternator light I can deduce what is actually
> happening inside my motor rather than having to wonder if that blinking
> light means anything THIS time, or if it is simply sending another false
> warning.
>   After wasting time beating that particular "Dead Horse"... The sketchy
> blinking light that gets so much bandwidth amongst Vanagon owners... I
> found a better way.  My Blinky-Light has been taped over now for 4yrs and
> about 70k miles.   Not elegant, but I have better things to do than
> fiddle-d-f**k, repeatedly, with something the VW engineering didn't get
> quite right.

--
Neil n

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