radiator cap VOLKSWAGEN TRANSPORTER 1990 T4 / 4.G Owners Manual

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VEHICLE CARE
Adding
coolant

Turn
off the
engine
and allow it to cool
down.

WARNING
Reduce the
risk
of scalding
from
hot

coolant
by
following
these
steps.
• If the cap
from
the expansion
tank

must
be
removed
wait
until
the
engine

has cooled down. The cooling system
is
under
pressure.
•
Protect
face, hands and
arms
by
covering the cap
with
a
large,
thick
rag
to
protect
against
escaping
fluid
and steam.
•
Carefully
and
slowly
turn
cap one

turn
to
allow
excess pressure to es­ cape
before
completely
removing
cap.

Top
up coolant in refill tank. Only when
cooling
system was drained or a lot of
cool­
ant needs to be added, also
fill
expansion
tank.

To
maintain the anti-corrosion properties of the coolant, the antifreeze concentra­
tion should not be reduced, even during
the warm
season.
Increasing
the
antifreeze
in the
coolant

to
more
than
60% is not
only
unecono­ mical, it is also
detrimental
to
engine

cooling.

Only
use quality phosphate-free anti­

freeze
containing ethylene glycol. Such antifreeze is available at your Volkswagen

dealer.

Antifreeze,
other
than
specified by Volks­
wagen,
may cause corrosion of the cool­ ing system,
leading
to
engine
over­

heating
and
damage.

Only
for topping-up coolant, a small amount of antifreeze containing ethylene

glycol
and phosphates may be
used,
if rec­
ommended antifreeze is not available.
• After adding coolant, run the engine at
idle speed for a few seconds.
• Wait for the radiator fan to switch on

and
off again.
• Check coolant level. Add more coolant
if necessary.

Do
not overfill the system.
Excess
coolant will be forced out through
the pressure relief valve in the reservoir
when the engine becomes hot.
Screw cap on
again
tightly.
Radiator
fan

The
electric radiator fan (located in
fror:
r the car behind grille) is controlled by !':
moswitches
from the coolant and enc
TE

compartment temperature.

After
turning
off the
engine,
the
radiate

fan can
continue
to run (up to 10 r>
nutes).
It may also suddenly
start
to rx

again
even
with
the
ignition
switched
c*

Notes
• If the radiator fan does not come c
when the coolant temperature is very high

check
the fuse and replace it if necessar, - see page 129.
• The speed of the radiator fan does nc

depend
on the engine
speed,
therefore
cooling
effect cannot be increased b.
downshifting. As long as the engine runs smoothly and driving an uphill road does
not considerably reduce
speed,
there is n:
need
to downshift.

Always
heed
WARNINGS
on
page
97.


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