1990 VOLKSWAGEN TRANSPORTER coolant temperature

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VEHICLE
CARE

COOLING
SYSTEM
The cooling system
is
sealed and gener­ ally requires little attention.
The cooling system has been filled at the factory with
a
permanent coolant which
does not need to be changed. The coolant

consists
of a
mixture
of
water
and the
manufacturer's coolant additive
G 11 —

antifreeze
on
glycol basis with anticorro-
sion additives (40% for USA
models;
50%
for Canadian models).
This
mixture
assures
the
necessary frost protection
and protects
the
entire cooling system
against corrosion and
scaling,
and raises
the boiling point of the coolant.
Do
not
reduce
the
concentration
of the

coolant
in the
summer
by
adding plain
water.
The coolant additive proportion
must
be at least
40%
but not more than

60%,
to
maintain the antifreeze protection
and the cooling efficiency. For year round driving, antifreeze is added
at the factory for temperatures down to:

-13°
F/-25°C(USA)

-40°
F/-40°
C
(Canada)

Only
use
quality phosphate-free
anti­

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

dealer.

WARNING Antifreeze is poisonous. Always store antifreeze in its original container and

well
out of the reach of children. If you drain
the
coolant,
it must
be
caught
and

safely stored. Drained coolant should normally not be reused. Always des-

pose
of used coolant observing all en­
vironmental regulations.
Coolant losses
Coolant losses may indicate
a
leak in
the

cooling
system.
In
this
case,
the
cooling
system should
be
inspected immediately by
your
Volkswagen dealer.
It is not
suffi­

cient merely to add coolant.

In a
sealed system, losses can only occur
if
the
boiling point
of the
coolant
is ex­

ceeded as
a
result of overheating.
Overheating can occur
if:

•
the
flow
of air to the
radiator
is

obstructed
by
leaves, dust, insects
or by

additional
lights installed
in
front
of the
radiator grille;

•
the boiling point of the coolant has been
reduced
due to an
incorrect mixture
of

coolant and water;

•
the
radiator fan
is not
working
- see

"Radiator
fan",
or;

•
the vehicle is being driven up
a
long
hill
j

in
a
low gear with engine speed
very
high
and
at
very
high ambient temperature
-

see
"Radiator fan".

If
the cause for the overheating cannot
be

determined
and
corrected, contact
your

Volkswagen dealer immediately, other-
I
wise serious engine damage could result.

104
Always
heed
WARNING on page
97.


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VEHICLE CARE

Refill
tank

Checking
the coolant level

The coolant level should
be
checked from time
to
time, and always before going on
a
longer
trip.

WARNING

To
reduce the risk of being burned, never open the hood if you see or hear
steam or coolant
escaping
from the en­
gine compartment.
Wait
until
no steam

or
coolant can be seen or heard before
carefully opening the
hood.
Expansion
tank
The refill tank and
the
expansion tank are in
the
engine compartment.
The coolant level
is
normally checked only in
the
refill tank (behind
the
license plate
lid).
The expansion tank needs checking only
if
a
large amount
of
coolant
is
lost
or if the

warning
light
in the
water temperature gauge lights up.
On
the
refill
and the
expansion tank,
the

cap
need
not
be taken
off,
since the tanks
are transparent.

On
the refill tank, the coolant level must
be

between
the
min.
and
max. marks when
engine
is
cold
and not
running. When
engine
is
warm, coolant level
may be

slightly above max. mark.
The expansion tank
is
equipped
with
an
electric coolant level checking device.
When the coolant level is too low, the warn­ ing
light
in the
coolant temperature gauge

(see
page
43)
will flash
until
the
coolant
level has been restored
to
normal.

Always heed WARNINGS on page 97.
105


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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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ALPHABETICAL
INDEX

page

Accessories
122

Air
cleaner 103

Air
Conditioner 54 All-wheel-drive 75
Alternator warning
light
44

Ashtrays
64
Assist
handles and coat hooks ... 67
Automatic safety belts 14
Automatic Transmission 35
Automatic Transmission Fluid .... 102 Auxiliary Heater 57, 60
Battery 109
Battery charging 110

Brake
fluid reservoir 108

Brake
warning
light
43
Brakes
29

Break-in
period 69

Bulb
chart 130

Bulb
replacing 130
Buzzer
7,35

Capacities
147

Catalytic
converter 144

Central
locking system 8
Cigarette lighter 63
Child
safety 15

Chime
7,35

Cleaning
products 89

Climate
controls 51
Clock
41 page

Coolant
temperature gauge .... 41

Cooling
system 104

Consumer
information 152
Corrosion
protection 94

Cruise
control 49

Curtains
27

Cup
holder 66

Dashboard
4

Data
146
Defogging/defrosting 52 Differential lock 33

Dimensions
148
Do-it-yourself service 123

Doors
9

Economically
driving 72

Electric
windows 12

Emergency
equipment 70
Emergency
flasher 46

Emergency
starting 136

Emergency
towing 138

Emission
Control System 144
Engine
code letter 151

Engine
compartment lid 97

Engine
cooling 41,104
Engine
exhaust 144

Engine
number 151

Engine
oil changing 100
pace

Engine
oil checking 9?

Engine
oil grades 9E

Expansion
tank 105

Fan
41, 10c

Folding
table 65

Foreign
country driving 120 Front seats 20

Fuel
economy 72

Fuel
gauge 42
Fuel
injection 142

Fuel
supply 86

Fuel
tank 85

Fuses
12E

Gas
Station
Information
156

Gasoline
additives 86
Gearshift lever 32

Glove
compartment 64
Headlight dimmer and flasher .... 48 Headlights 13C
Headlight adjustment 134
Headlight switch 46

Head
restraints 19 HeatingA/entilation 51
High beam 45,48
Horn 4
Identification label and number ... 151
Ignition/steering lock 38
Indicator lights 43


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