[Vwdiesel] Rabbits 1980-1984 (keeping the heads cool)

Nate Wall natewall1 at yahoo.com
Tue Jul 1 07:43:12 EDT 2003

The TDs put out more heat at full tilt than the NAs,
for obvious reasons: more fuel is being burnt. I
rarely drive in the mountains, but on the couple times
I did it, the temp guage climbs right up to near the
"Red" zone, and the cooling fan kicks in on "LOW"
about three quarters of the way up. I think it then
kicks in on "High" at some point. I belive the
thermostat opens anywhere over mid-point on the guage.
Point is, you can add a manual override switch when
turned on, turns the cooling fan on "High" to start
extracting more heat from the coolant sooner, and
faster. Turn it on when beginning to climb those
grades. Glimbing a grade = more power needed and
slower speeds w/ less air-flow thru the radiator. I
never added one, though because of rare mountain use.


--- Scott Kair <scott3491 at insightbb.com> wrote:
> Hagar wrote:
> >>This one the needle hung on last mark before red
> (made me nervous). <<
>     That's way too high, unless you really got
> carried away with the foot
> feed climbing mountains in the heat.
>     >>Can someone tell me on the expanded temp scale
> what each mark
> represents in degrees ???.<<
>     Judging from the proper gauges in the trucks and
> equipment at work, the
> one in the middle would be around 180F.
>     >>Yesterday I removed the thermostat completely
> (80 C one) ----now the
> needle hangs around mark 1 or two.----<<
>     They've been known to stick, even when new.
> Quality among manufacturers
> varies, too.  The one in the last Caddy I had was
> scary; from cold, the
> gauge would go to about 3/4 of the way open, then
> the thermostat would open
> and the temp would drop.
>     The turbos I've had ran noticeably warmer, but
> I'm not sure whether
> that's related to the cooling system or more
> vigorous driving.
>     Is the fan working?
>     HTH,
>     Scott Kair
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