Date: Wed, 9 Jun 2004 08:20:57 -0700
Reply-To: gary hradek <hradek@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: gary hradek <hradek@YAHOO.COM>
Subject: Re: vanagon Digest - 8 Jun 2004 - Special issue (#2004-539)
Content-Type: text/plain; charset=us-ascii
Mark,
I am impressed with the knowledge detail you have
concerning this critical system. If I would have
been John I would have guessed that there was
something wrong with a temp gauge that does not
actually work when you really need it???
Does not sound like German engineering.
Perhaps it is a good idea to pull and test which
system one has and upgrade to a working measuring
system when possible.
Date: Tue, 8 Jun 2004 18:12:07 -0700
From: mark drillock <drillock@EARTHLINK.NET>
Subject: Re: Is John right about the temp gauge
John is right, but only for 83,84, and some 85
Vanagons. During 85 VW
switched to a new "coolant level sensor control unit"
RELAY. The new
type does not peg the needle on hot when the coolant
is low, it only
blinks the LED and the needle continues to indicate
actual engine temp.
Earlier models do both and can cause many tense
moments as a result.
Both versions can be used in any 83 or newer
watercooled Vanagon or
Syncro. Water cooled Vanagons prior to 83 do not have
a coolant level
warning system at all. In 83 they implemented the
sensor in the main
tank and put the control unit for it in a nice hiding
place just below
the far left end of the dash. Very hard to find. In 86
they mounted it
in the main relay panel where anyone can get to it.
The "relay" has a
large number "43" stamped on the top. Both versions
have this "43" on
them. The early version is a little taller. They have
different part
numbers but can be used interchangeably with different
behaviors as
noted. I have written about this many times over the
years so the
archives will contain addition info regarding the
differences and the
part numbers.
Keep in mind that someone may have already changed the
"43" relay so
any
year can have either type at this point.
Mark
gary hradek wrote:
>
> John,
> Perhaps there a few machines that are wired
this
> way but it makes no sense. In any case it can
easily
> be tested by everyone by pulling the wires to the
> coolant sensor. My 87 clearly has the coolant
sensor
> unrelated to the temperature sensor when the coolant
> level is low in the tank. The temperature gauge
> reads the temperature of the sensor at the
thermostat. My apologies go out to John for
questioning his senses. It was VW sense that should
be questioned. Gary
> If the coolant is hot it reads hot until all the
> coolant is gone and then the gauge begins to drop
> because there is no hot coolant in contact with the
> sensor. I think we need to reconsider what is
being
> suggested. gary
> Date: Tue, 8 Jun 2004 00:29:09 -0400
> From: lauterba <lauterba@BELLSOUTH.NET>
> Subject: Re: Overheating problem
>
> Jack, please note that when coolant sensor thinks
> there is low coolant,
> the
> temp gauge goes to H even though the engine may be
at
> or even below
> normal
> operating temperature.
>
> John
> Macon, GA
> '84 7-passenger
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