[Vwdiesel] 1984 Rabbit Diesel- taming the hothead

[Nate Wall]

Question:

On the two-speed cooling fan systems (I think its A/C
specific, and perhaps TD specific too, correct?) AFter
the fan comes "on" on low speed, if the engine still
gets hotter (like climing a grade), will the fan turn
on "High Speed" at some point? Just curious. Mine
never seemed to get hot enough to do this. The fan
definitely cycles between "High " and "Low" with the
A/C on, though, but this because of a pressure switch
in the "High" side line on the A/C system to cool the
condensor and certain R-12 pressures.

--Nate
--- Scott Kair <scott3491 at insightbb.com> wrote:
> Hagar,
>     Just caught this in re-reading your message:
>
>     >>Scott .    Q:  did fan work     A:   did not
> notice.       checked it
> in driveway , it is a two speed    used jumper on
> radiator plug -- a-ok both
> speeds. Then let it idle   when temp reached red fan
> started.  Lab
> thermometer in expansion tank showed 200 F.<<
>
>     Something is amiss, either with your
> thermosensor or your dash gauge.
> While I've never used a lab thermometer to check
> when the fan should kick
> on, every VWD I've ever had turned on the fan at
> around the 3/4 mark.  And
> 200F sounds a bit low for it to be the red zone,
> although a good point for
> the fan to kick on.
>     Maybe some of the other guys would have more
> experience in that area, as
> overheating is definitely a critical issue.
>     Scott Kair
>
>
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