coolant level BMW 325i 1997 E36 User Guide

130-24



FUEL
INJECTION

Jo
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THROTTLE
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ENGINE
COOLANT
TEMP

FUELTANK
PRESSURE
SENSOR

S-EML
S-MSR

S-ASC

VEHICLE
SPEED

LOW
FUEL
LEVEL

A/C
SWITCH
ON
(AC)
E36
IHKA



COMPRESSOR
"ON"
SIGNAL
(KO)

INDIVIDUAL
SERIAL
NUMBER

SIEMENS
MS
41
.
1
COMPONENT
REPLACEMENT

FUEL
PUMP
RELAY
CONTROL
AUX
GROUND
P

MAIN
GROUND
AC
COMPRESSOR
RELAY
CONTROL



~®

SECONDARY
AIR
INJECTION
AIR
PUMP
RELAY
CONTROL
-
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PRE
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POST
CAT
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SENSOR

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FUELINJECTOR
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MS
41
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PURGE
CONTROL
VALVE



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PURGE
'
CANISTERSHUT-OFF
VALVE

ECM
RELAY
CONTROL

IGNITION
COILS
CONTROL

1
ASC

o
ayi

THROTTLE
POTENTIOMETER
POWER

,

al
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.

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Fig
.
36
.
Siemens
MS
41
.1
OBD
II
engine
management
system
usedon
M52
engine
.
Bosch
M5
.2
systemusedon
M44
engine
is
similar
.

170-6



RADIATOR
AND
COOLING
SYSTEM

Fig
.
6
.



Radiator
drain
plug
(arrow)
.

WARNING
-

Coolant
is
poisonous
.
Itis
especially
lethal
to
pets
.

Cleanup
spills
immediately
and
rinse
the
area
with

water
.

NOTE
-

The
block
drain
plug
is
located
on
the
exhaust
side
of
the
engine,
near
the
reas
of
the
engine
.

4
.
Reinstall
radiator
and
engine
block
drain
plugsusing

new
sealing
washers
.
Leave
heater
controis
on
full

warm
.

5
.
Using
a
coolantmixture
of
50%
antifreeze
and
50%
dis-

tilled
water,
fill
system
slowly
On
radiator
with
integral

expansion
tank,
bleed
cooling
system
as
described
be-

low
.

NOTE-

"
Tap
water
may
cause
corrosion
of
radiator,
engine
and
coolant
hoses
.

"
Coolant
can
often
be
reused
provided
itis
clean
and
less
than
twoyears
old
.
Do
not
reuse
coolant
when
re-
placing
damaged
engine
parts
.
Contaminated
coolant
may
damage
the
engine
or
cooling
system
.

Tabled
.
Cooling
System
Capacities

Engine



j
Capacity

4-cylinder



1
6
.5
liters
(6.9
qt)

6-cylinder
M50/M52



10
liters
(10
.6
qt)
S50US/S52US



10
.5
liters
(11
.1
qt)

COOLING
SYSTEM
SERVICE

Tightehing
Torques

"
Radiator
drain
plug
to
radiator
...
2-3
Nm
(18-27
in-lb)

"
Engine
block
drain
plug
to
block



.
.
..
25
Nm
(18
ft-Ib)

Cooling
system,
bleeding

(radiator
with
integral
expansion
tank)

NOTE
-

On
radiators
with
a
separate
expansion
tank,
ableed

screw
is
not
provided
.
The
cooling
system
with
sepa-

rate
expansion
tank
is
self
bleeding
via
the
vent
hose

on
the
expansion
tank
.

Air
maybecome
trapped
in
the
system
during
filling
.

Trapped
air
can
prevent
proper
coolant
circulation
.
Whenever

the
coolant
is
drained
and
filled,
the
system
should
be
bled
of

trapped
air
.

1
.
With
engine
cold,
add
coolant
to
expansion
tank
until

level
reaches
COLD
(KALT)
mark
on
tank
.

2
.
Loosen
bleed
screw
on
radiator
expansion
tank
.
See

Fig
.
7
.

0011976

Fig
.
7
.



Cooling
system
bleed
screwon
radiator
(arrow)
.
Note
cold
level
mark
on
expansion
tank
.

3
.
M3
models
:
Loosen
bleed
screw
on
thermostathous-

ing
.

4
.
Set
temperature
controls
in
passenger
compartment
to

fui¡
warm
and
turn
ignition
on
position
(do
not
start
en-

gine)
.

5
.
Slowly
add
coolant
until
it
spills
from
bleed
screws
.

When
coolant
spillíng
from
bleed
screws
is
free
of
air

bubbies,
tighten
screws
.

6
.
Run
engine
until
it
reaches
operatíng
temperature
.
Af-

ter
engine
has
cooled,
recheck
coolant
level
and
top
up
as
necessary
.

CAUTION-

Always
use
genuine
BMW
coolant
or
its
equiva-

lent
to
avoid
the
formation
of
harmful,
clogging
de-

posits
in
the
cooling
system
.
Use
of
other
antifreeze
solutions
may
be
harmful
to
the
cooling
system
.

Tightening
Torque

"
Radiator
bleed
screw

to
thermostat
housing
...
.
.
........
8
Nm
(71
in-lb)

Belt-driven
cooling
fan,
replacing

1
.
Usinga32
mm
wrench
on
fan
clutch
nut,
turn
wrench

quickly
in
a
clockwise
direction
(working
from
front
of

car)
to
loosen
.
Spin
fan
off
pump
.
See
Fig
.
8
.

NOTE-

"
The
radiator
cooling
fan
nut(32
mm
wrench)
has
left-
hand
threads
.

"
The
nut
may
be
difficult
to
loosen
.
Use
a
tool
to
hold
the
coolant
pump
pulleystationary
.
BMW
hasa
spe-
cial
tool
forthis
purpose
(BMW
special
tool
no
.
115
030)
.

2
.
Remove
expansion
rivets
holding
shroud
to
radiator
.

See
Fig
.
9
.
Remove
fan
and
shroud
together
.

NOTE-

Store
the
removed
fan
clutch
assembly
in
an
upright
(installed)
positionto
prevent
lossof
clutch
fluid
.

RADIATOR
AND
COOLING
SYSTEM



170-
7

Fig
.
8
.



Radiatorcooling
fannut
(arrow)
.
Nuthas
left-hand
threads
.

3
.
To
replace
fan
clutch,
remove
fan
mounting
bolts
and

separate
clutch
from
fan
.
Fig
.
9
.



Fan
shroud
retaining
rivet
(arrow)
.
Pryout
center
pin
and
re

4
.
Installation
is
reverse
of
rernoval
.



move
rivet
.
Rivet
design
may
vary
depending
on
model
and

model
year
.

Tightening
Torques

"
Clutchnut
to
coolant
pump
(left-hand
threads)

Wíthout
BMW
tool
no
.
11
5
040
.....
40
Nm
(29
ft-lb)

With
BMW
tool
no
.
11
5
040
.
......
30
Nm
(22
ft-Ib)

"
Fan
to
viscous
clutch
...
.
..
.
......
10
Nm
(89
in-lb)

0013203

COOLING
SYSTEM
SERVICE

84831

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1992-93
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1994-95
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