Engine cooling BMW 318i 1997 E36 Service Manual
[x] Cancel search | Manufacturer: BMW, Model Year: 1997, Model line: 318i, Model: BMW 318i 1997 E36Pages: 759
Page 203 of 759
Fig
.
13
.
Version
2
auxiliary
fan
mounting
screws
(arrows)
.
Front
bumper
hasbeen
removed
.
4
.
Installation
is
reverse
of
removal
.
Thermostat,
replacing
0013146
The
coolant
thermostat
is
instalied
in
a
housing
at
the
front
of
the
cylinder
head
.
See
Fig
.
14
.
Fig
.
14
.
Coolantthermostat
and
housíng
.
NOTE-
On
M44
engines,
the
thermostat
is
integrated
into
the
thermostat
housíng
.
If
the
thermostat
requiresreplace-
ment,
the
complete
thermostathousing
mustbe
replaced
.
RADIATOR
AND
COOLING
SYSTEM
170-
9
WARNING
-
Allow
the
cooling
system
to
cool
before
opening
ordraining
the
system
.
2
.
Remove
belt-driven
cooling
fan
and
fan
shroudas
de-
scribed
earlier
.
3
.
On
M52/S52US
engines
:
Unclip
wiring
duct
retaining
clips
and
remove
duct
from
above
thermostat
housing
.
Also
remove
engine
front
lifting
bracket
.
4
.
Remove
thermostat
housing
from
front
of
engine
.
See
Fig
.
15
.
Fig
.
15
.
Thermostat
housíng
shown
removed
(6-cylinder
engine)
.
NOTE-
Some
thermostats
have
a
direction
arrowor
venthole
near
the
edge
.
Install
the
thermostat
so
that
either
the
arrow
or
hole
are
at
thetop
.
CAUTION
-
Be
sure
to
reconnect
ground
wire(s)
at
thermostat
housing
mounting
bolt,
where
applicable
.
5
.
Remove
thermostat
.
Note
thermostat
direction
and
ori-
entation
before
removing
.
6
.
Insta¡¡
new
thermostat
and/or
thermostat
housing
using
new
O-ring
and
gasket(s)
as
necessary
.
oo131ss
7
.
Installation
is
reverseof
removal
.
Fill
system
with
cool-
ant
as
described
under
Coolant,draining
and
filling
.
Tightening
Torques
1
.
Drain
radiator
as
described
above
under
Coolant,
"
Thermostat
housing
cover
draining
and
filling
.
to
housing
orcoolant
pump
..
..
....
10
Nm
(89
in-lb)
"
Engine
lifting
bracket
bolt
to
thermostat
housing
(M52/S52US
engine)(M8)
....
..
...
22
Nm
(17
ft-Ib)
COOLING
SYSTEM
SERVICE
Page 204 of 759
170-10
RADIATOR
AND
COOLING
SYSTEM
Coolant
pump,
replacing
The
engine
coolant
pump
is
mounted
in
the
frontof
the
en-
gine
on
the
timing
cover
.
See
Fig
.
16
.
Fig
.
16
.
Coolant
pump
mounted
on
timing
cover
.
NOTE-
Onlyreplacement
coolant
pumps
with
metal
¡mpellers
should
be
installed
.
Pumps
with
plastic
impellers
should
not
be
used
.
1.
Drain
cooling
system
as
described
earlier
.
0013197
WARNING
-
Allow
cool¡ng
system
to
cool
before
open¡ngor
drain¡ng
system
.
2
.
Remove
primary
cooling
fan
shroud
and
cooling
fan
(belt-driven
or
electric)
as
described
earlier
.
Fig
.
17
.
Engine
drive
belt
tensioner
being
released
on
M44
engine
.
Pry
off
tensioner
cover
and
then
lever
tensioner
in
counterciock-
wise
direction
(as
facing
engine)
and
slip
belt
off
pulleys
.
Fig
.
18
.
Drive
belt
tensioner
being
released
on
M52
engine
.
Pry
off
3
.
Disconnect
hoses
from
thermostat
housing
.
Unbolt
tensioner
cover
and
then
lever
tensioner
clockwise
(as
facing
thermostat
housing
from
front
of
cylinder
head
.
engine)torelease
belt
tension
.
4
.
Remove
coolant
pump
drive
belt
.
See
Fig
.
17
or
Fig
.
18
.
NOTE-
-
Mark
direction
of
drive
belt
rotation
if
reusing
belt
.
"
The
6-cylinder
coolant
pump
¡s
mounted
on
studs
and
retained
by
nuts
.
"
Severa¡
drive
belt
and
tensioner
configurations
havebeenused
in
E36
models
.
Refer
to
020
Maintenance
Program
and
640
Heating
and
Air
Conditioning
.
5
.
Remove
coolant
pump
pulley
from
pump
.
6
.
Remove
mounting
fasteners
from
pump
.
COOLING
SYSTEM
SERVICE
NOTE-
"
The
4-cylinder
coolant
pump
¡s
mounted
us¡ng
two
dif-
terent
length
bolts
.
Note
where
thelonger
bolt
fits
dur-
ing
disassembly
.
0011989
7
.
Insert
twoscrews
(M6)
in
tapped
bores
and
tighten
uni-
formly
until
pump
is
free
from
timing
chain
cover
.
See
Fig
.
19
.
Page 304 of 759
400-2
BODY-GENERAL
4-door
Sedan
Coupe
-
saas3
.7""
351
/
37
.3
O
I
x
`-193
267
o
oa
'3281
model
"M3
model
Convertible
BODYASSEMBLY
55
ass
.e
iss
""
-
66
.9
-
Fig
.
2
.
E36
body
dimensíons
.
BODY
ASSEMBLY
29
.4
29
4
The
BMW
3
Series
chassis
is
a
unibodydesign
constructed
ofhigh
strength
steel
.
Attaching
parts,
suchas
the
front
fend-
ers,
rear
quarter
panels,
doors,
trunk
lid
and
hood
are
also
constructed
of
steel
.
706
.31108
.7"
I
38
.5
174
.5
174
.5
O
oo
196
.3/106
.7'
"
35_5
1.
.
55
.9,566
".
106
.3/196
.7""
i.
358
-1745-
55
9/56
3'/56
6"
-
J
0013099
Windows
bonded
flush
to
the
body
and
the
guided
flow
of
cooling
air
into
the
engine
compartment
provide
a
good
coeffi-
cient
of
drag(CD)
.
TheE36
cars
have
a
CD
of
approximately
0
.30for
the
sedan
and
coupe
models,
and
0
.35
for
the
con-
vertible
models
:
The
exterior
panels
are
corrosion-resistant
zinc
coated
steel
.
The
front
fenders
are
bolted
on
and
easily
replaceabie
.
The
body
styles
of
E36
cars
coveredby
this
manual
arethe
See410
Fenders,
Engine
Hood
.
4-door
sedan,
2-door
coupe
and
convertible
.
Body
dimen-
sions
vary
slightly
betweenmodels
.
See
Fig
.
2
.
The
front
and
rear
bumpers
use
an
aluminum
framework
with
an
overlaid
high-impact,
deformable
plastic
cover
.
This
Exterior
and
Aerodynamics
bumper
system
keeps
damage
to
a
minimum
in
head-on
colli-
sions
of
up
to
10
m
.p
.h
.
(15
km/h)
.
See
510
Exterior
Trim,
TheE36
can
be
immediatelyrecognized
asa
typical
BMW
.
Bumpers
.
With
its
traditionalstyling
features,
suchas
the
BMW
kidney
grille,
circular
headlights
behind
a
glass
cover
(for
reasons
of
streamliníng),
and
the
"kick"
in
the
rearmost
roof
pillar
(C-pil-
lar)
.
Page 312 of 759
410-4
FENDERS,
ENGINE
HOOD
4
.
With
aid
of
assistant,
remove
hood
hinge
bolts
from
left
and
Rght
sides
of
hood
.
Lift
hood
off
carefully
See
Fig
.
8
.
Fig
.
8
.
Hood
hinge
bolts
(arrows)
.
Right
side
shown
.
5
.
Installation
is
reverse
of
removal
.
NOTE-
The
hood
was
fitted
and
attached
to
an
unfinished
body
at
the
factory
.
Unfinished
surfaces
exposed
by
this
pro-
cedure
must
betouchedup
wfth
pafnt
.
Hood,
aligning
ENGINE
HOOD
0013149
6013150
Fig
.
9
.
Hood
panel
gaps
should
be
even
(approx
.
5
.5
mm)
at
all
points
(arrows)
.
Hood
release
cable
and
latches,
adjusting
Before
adjusting
hood
latches,
be
sure
the
hood
is
aligned
evenly
to
fenders
and
front
panel
.
The
hood
latch
and
cable
assembly
is
shown
in
Fig
.
10
.
"
Repair
any
paint
damage
and
paint
any
exposed
metal
.
"
Check
hood
alignment
as
described
next
.
1
.
To
adjust
hood
cables
:
When
installing
the
hood,
align
the
hinges
as
close
to
the
original
paintedsurface
as
possible
.
Movement
of
the
hood
on
its'attaching
hardware
may
require
touch-up
paint
.
The
hood
should
be
aligned
so
that
gapson
all
sides
areas
even
as
possible
.
See
Fig
.
9
.
Clearance
Specification
"
Hood
edges
to
adjoining
body
panel
(gap)
........
..
..
..
.....
.5
.5
mm
(0.216
in)
"
Remove
left
and
right
radiator
grilles
.
See
510
Exterior
Trim,
Bumpers
.
"
Remove
electric
auxíliary
cooling
fan
.
See
170
Radia-
tor
and
Cooling
System
.
"
Adjust
cable
section
between
two
hood
latches
so
there
is
no
play
(cables
must
not
be
under
tension
ei-
ther)
.
2
.
Loosen
hood
latches
at
hood
on
left
and
right
sides
.
Loosen
bolts
only
enough
to
allow
movement
of
latch
.
See
Fig
.
11
.
3
.
Lower
(but
do
not
fully
latch)
hood
severa¡
times
so
latches
on
hood
center
themselves
in
lower
locks
.
CA
UTION-
Do
not
let
hood
fockwith
latchbolts
loose
.
4
.
Tighten
hood
latch
bolts
when
alignment
is
correct
.
5
.
Remove
one
screw
fromeach
side,
clean
and
coat
with
Loctite
O
270
or
equivalent,
and
reinstall
.
Page 392 of 759
610-6
ELECTRICAL
COMPONENT
LOCATIONS
Fig
.
15
.
M44
engine
harness
connectors
atair
intake
0011644
Fig
.
16
.
A/
C
recharging
ports
(arrows),
right
rear
of
engine
compart-ment
COMPONENT
LOCATIONS
0012427
811004
Fig
.
17
.
Six-cylinder
ignition
coil
in
top
of
cylinder
head
(M52
engine)
.
Fig
.
18
.
Cooling
fan
dualswitch
in
radiator
(arrow)
.
0013203
Page 397 of 759
Table
a
.
E36
Component
Locations
Component
Model
Year
Location
Refer
to
Anti-theft
Control
Module
1992-1998
Behind
glove
compartment
Fig
.
8
.
Fig
.
9
.
Anti-theft
Horn
1
1992-1998
1
Right
rear
engine
compartment
Anti-slip
(Traction)
Control
Module
1994-1998
Power
distribution
box
Fig
.
8
.
(AST/ASC+T)
Fig
.
9
.
Anti-slip
(Traction)
Control
Switch
1994-1998
In
center
console
Automatic
Climate
(A/C)
Control
1992-1998
Behind
center
console
Module
AutomaticTransmission
Range
1992-1998
~
Next
to
gear
shift
lever
in
center
console
Fig
.
29
.
Switch
(Gear
Position/Neutral
Safety
Switch)
Auxiliary
Cooling
Fan
Dual
Switch
1992-1998
Right
side
radiator
1
Fig
.
18
.
Auxiliary
Cooling
Fan
Motor
1992-1998
Behind
front
grill
Auxiliary
Fuse
Box
(Left
Splice
1992-1998
I
Behind
left
front
footwell
kick-panel
Panel)
Auxiliary
RelayPanel
1
1992-1998
1
Left
side
of
dash
under
steering
column
Auxiliary
Fuse
Box
In
Trunk
1
1997-1998
1
Right
sideof
trunk
behind
trim
panel
AuADSry
ThrottlePosition
Motor
11994-1998
Front
of
engine
compartment
B+
Jump
Start
Junction
Point
1992-1998
Right
rear
of
engine
compartment
Fig
.
7
.
Back-Up
Light
Switch
(Manual)
1992-1998
Right
or
left
side
top
of
transmission
Fig
.
30
.
Body
Electronics
Control
Module
1994-1998
Behindglove
compartment
Fig
.
8
.
(ZKE
IV)
Fig
.
9
.
Brake
Fluid
Level
Sensor
1992-1998
Top
of
brake
fluid
reservoir
at
master
cylinder
Fig
.
15
.
Brake
Light
Switch
1
1992-1998
1
On
brake
pedal
supportbracket
Brake
Pad
Sensor,
Left
Front
1
1992-1998
1
Left
front
brake
caliper
Brake
Pad
Sensor,
Right
Rear
1992-1998
Right
rear
brake
caliper
Camshaft
Actuator
(VANOS)
1993-1998
Front
of
cylinder
head
Camshaft
Position
Sensor
(Cylinder
1992-1998
Front
of
engine
Identification)
Carbon
Canister
Valve
(TLEV)
1
1997-1998
1
In
sparewheel
well
in
trunk
ELECTRICAL
COMPONENT
LOCATIONS
610-11
Fig
.
5
.
Fig
.
4
.
Fig
.
24
.
Fig
.
7
.
Central
Locking
Module
(ZVM)
11992-1993
1
Behindglove
compartment
I
Fig
.
8
.
Fig
.
9
.
Check
Control
Module
(if
applicable)
1
1992
-
1998
1
Below
left
side
of
dash
Child
Protection
Window
Control
1992-1998
Center
console
(console)
Chime
Module
1992-1998
Below
left
side
of
dash
inleft
dash
trim
panel
Clock
(Multi-Function)
1993-1998
Center
console
Clutch
Pedal
Switch
1992-1998
On
clutch
pedal
support
bracket
Continued
COMPONENT
LOCATIONS
Page 398 of 759
610-12
ELECTRICAL
COMPONENT
LOCATIONS
Table
a
.
E36
Component
Locations
Component
Model
Year
Location
Refer
to
Combination
(Stalk)
Switch
1993-1998
Left
sidesteering
column
(turn
signals/high-low
bean
switch)
Convertible
Top
ActuatingSwitch
1994-1998
Center
console
Convertible
Top
Control
Module
1994-1998
In
lower
left
C-pillar
behind
trim
panel
Convertible
TopEnd
Position
Switch
1994-1998
In
convertible
top
linkage
Convertible
Top
Motor
1994-1998
In
left
sideof
trunk
behind
trim
panel
Convertible
Top
Position
1994-1998
In
convertible
top
linkage
Microswitch
Convertible
Top
Storage
Lid
Lock
1994-1998
In
convertible
top
compartment
left
side
Motor
Convertible
Top
Storage
Lid
1994-1998
Inright
side
convertible
top
storage
lid
latch
Microswitch
Convertible
Top
Storage
Lid
Motor
1994-1998
In
left
side
of
trunk
behind
trim
panel
Coolant
Leve¡
Sensor
(if
applicable)
1992-1998
Bolted
on
radiator,
left
side
Coolant
Temperature
Sensor
1992-1998
Left
front
of
engine/cylinder
head
Fig
.
19
.
Fig
.
20
.
Cooling
Fan
Dual
Switch
1992-1998
Right
side
radiator
Fig
.
18
.
Cooling
Fan
Motor
1992-1998
Behind
front
grill
Crankshaft
Position/RPM
Sensor
1992-1995
At
front
crankshaft
pulley
Crankshaft
Position/RPM
Sensor
1996-1998
Left
rearof
crankcase
Crash
Sensor,
Airbag
1992-1993
On
right/left
frontstrut
tower
Crash
Control
Module
1992
Auxiliary
relay
panel
Crash
Control
Module
1993-1998
Driver's
side
footwell
Crash
Sensor,
Right/Left
Side
1997-1998
Right/left
door
sill
behind
front
seat
Impact
Airbag
Cruise
Control
Actuator
1992-1998
Left
front
of
engine
compartment
Fig
.
7
.
Cruise
Control
Module
1992-1998
Behind
glove
compartment
Fig
.
8
.
Fig
.
9
.
Data
Link
Connector
1992-1998
Right
sideof
engine
Fig
.
7
.
Digital
Motor
Electronics
(DME)
1992-1998
Right
rear
engine
compartment,
behind
bulkhead
panel
Fig
.
7
.
Control
Module
DoorLock
Heater
1993-1994
Left
front
doorhandle
DoorHandle
Switch
1994-1998
left
front
door
Drive-away
Protection
(EWS
II)
1/1995
-
1998
Behind
glove
compartment
Fig
.
8
.
Module
Fig
.
9
.
Dual
Coolant
Temperature
Sensor
1997-1998
Below
intake
manifold
Fig
.
19
.
COMPONENT
LOCATIONS
Fig
.
20
.
Electronic
Immobilizer
Control
(
1/1995-1998
~
Behind
glove
compartment
Fig
.
8
.
Module
(EWS
II)
Fig
.
9
.
Continued
Page 401 of 759
Component
Model
Year
Location
Refer
to
Heater
Recirculation
Flap
Actuator
1992-1998
Below
left
dash
right
side
of
steering
column
HeaterBlowerMotor
Resistor
Pack
1992-1998
Behind
center
of
dashboard
Heater
Regulator
FlapActuator
1997-1998
Right
side
of
heater
box
HeaterValve
Assembly
1992-1998
Left
rear
engine
compartment
HeatingNentilation
Relay
Box
1992-1993
Below
left
side
of
dash
HeatingNentilation
Relay
1994-1998
Left
front
footwell
High
Speed
Cooling
Fan
Relay
1992-1998
Power
distribution
box
Fig
.
2
.
Homs,
Right/Left
1993-1998
Front
of
engine
compartment
Horn
Relay
1992-1998
Power
distribution
box
Fig
.
2
.
Horn
Relay
(Alpine)
1994-1998
Behind
glove
compartment
Fig
.
8
.
Board
Computer/Anti-Theft
Fig
.
9
.
Idle
Speed
Control
Valve
1992-1995
Top
rearof
enginebehind
intake
manifold
(M42
engine)
Fig
.
11
.
Idle
Speed
Control
Valve
1992-1995
Top
left
side
of
engine
(M50
engine)
Idle
Speed
Control
Valve
1993-1996
Below
intake
manifold
(M50/S50US
engine)
Idle
Speed
Control
Valve
1996-1998
On
throttle
housing
(M44
engine)
Fig
.
15
.
Idle
Speed
Control
Valve
1997-1998
Left
front
of
engine
below
intake
manifold
(M52/S52US
engine)
Ignition
Coils
1992-1998
Right
of
engineunder
plastic
cover
(four-cylinder)
Fig
.
7
.
Ignition
Cofs
1992-1998
Top
of
engine
undercover
(six-cylinder)
Fig
.
17
.
Ignition
Switch
1992-1998
Right
sídeofsteering
column
Intake
Air
Resonance
Changeover
1992-1998
Leftrear
of
engine
compartment
Valve(DISA)
Intake
Air
Temperature
Sensor
1992-1995
In
mass
air
flow
sensor
(M42
engine)
Intake
Air
TemperatureSensor
1996-1998
In
top
ofair
filter
housing
(M44
engine)
Fig
.
12
.
Intake
Air
Temperature
Sensor
1992-1998
I
Left
sídeof
engine
in
intake
manifold
(six-cylinder)
-
-
I
Fig
.
13
.
Fig
.
14
.
Kick-Down
Switch
(A/T)
1
1992-1998
1
Left
footwell
Mixing
Actuators
1
1992-1998
1
Heater
box
ELECTRICAL
COMPONENT
LOCATIONS
610-15
Table
a
.
E36
Component
Locations
Knock
Sensors
1
1992-1998
1
Left
side
of
engine
block
Left
Front
Power
Window
Motor
11992-1998
/
Left
front
door
Left
Front
Window
Monitoring
Switch
1
1997-1998
1
Left
front
door
trim
panel
Left
Front
Window
Retraction
Switch
1
1992
-
1993
1
Left
front
door
handle
lock
assembly
Left
Splice
Panel
1
1992-1998
1
Under
left
side
of
dash
at
kick-panel
1
Fig
.
5
.
Main
Fuse
and
Relay
Box
(Power
1992-1998
I
Left
sideof
engine
compartment
Fig
.
2
.
Distribution
Box)
1
I
Mass
Air
Flow
Sensor
1992-1998
I
Left
side
of
engine,
intake
air
duct
Fig
.
7
.1
I
Fig
.
15
.
Continued
COMPONENT
LOCATIONS
Page 402 of 759
610-16
ELECTRICAL
COMPONENT
LOCATIONS
Component
Model
Year
Location
Refer
to
MixingSwitch
1992-1994
Center
console
Multi-Function
Clock
1992-1998
Center
console
Multi-information
Display
(MDI)
1992-1998
Center
console
Normal
Speed
Cooling
Fan
Relay
1992-1998
Power
distribution
box
Fig
.
2
.
Neutral
SafetySwitch
(Automatic
1992-1998
Next
to
gear
shift
lever
in
center
console
Fig
.
29
.
Transmission
Range
Switch)
Oil
Pressure
Switch
1992-1998
Left
front
of
engine
below
intake
manifold
at
oil
filter
housing
On-Board
Computer
1992-1998
Center
console
On-BoardComputerHorn
Relay
1992-1998
Behind
glove
compartment
Fig
.
8
.
Fig
.
9
.
On-Board
Computer
Temperature
11992-1998
I
Right
front
of
engine
compartment
Sensor
Outside
Temperature
Sensor
1992-1997
Inright
front
brake
cooling
duct
Outside
Temperature
Sensor
1998
Right
rear
of
engine
compartment
behind
fresh
air
cowl
Oxygen
Sensor
HeaterRelay
1992-1998
Power
distribution
box
Fig
.
2
.
Oxygen
Sensor(s)
1992-1998
On
exhaust
pipe
ahead/behind
catalytic
converter
(M42/M44
engine)
Oxygen
Sensor
(x2)
1992-1995
On
exhaust
pipe
ahead
of
catalytic
converter
(M50/S50US
engine)
Oxygen
Sensors
(x4)
1996-1998
On
exhaust
manifold/exhaust
pípe
behind
catalytic
converter
(M52/S52US
engine)
Parking
Brake
Switch
1
1992-1998
I
On
rear
of
parking
brake
lever
Power
Distribution
Box
11992-1998
I
Rear
left
of
engine
compartment
I
Fig
.
2
.
Fig
.
7
.
Fig
.
10
.
Radio
Microswitch
1992
-
1996
Center
console
behind
radio
Radio
Receíver
1
1997-1998
1
Right
rear
luggage
compartment
Relay
And
Fuse
Box
(Power
1992-1998
I
Left
side
of
engine
compartment
I
Fig
.
2
.
Distribution
Box)
Fig
.
7
.
Fig
.
10
.
Rear
Window
Blower
1994-1998
Behind
rear
seat
(convertible)
Rear
Window
Blower
Microswitch
1994-1994
At
convertible
top
linkage
Rear
Window
Blower
Microswitch
1995-1998
Behind
rear
seat
(convertible)
Rear
Window
BlowerRelay
11994-1998
Behind
glove
compartment
Fig
.
8
.
Fig
.
9
.
Fig
.
2
.
Fig
.
30
.
Fig
.
8
.
Rear
Window
DefoggerRelay
Reversing
(Back-up)
Light
Switch
SplicePanel,
Right
Rollover
Protection
Actuator
11994-1998
COMPONENT
LOCATIONS
Table
a
.
E36
Component
Locations
1992-1998
1992-1998
1992-1998
Power
distribution
box
Right
or
left
side
top
of
transmission
Behind
glove
compartment
Behind
rear
seat
(convertible)
Fig
.
9
.
Continued
Page 449 of 759
9
.
Release
blower
motor
retaining
strap
andremove
blow-
er
motor
and
fans
fromcowl
opening
.
NOTE-
Twist
and
rotate
blowermotor
assembly
to
facilítate
re-
moval
from
opening
.
If
the
blower
motor
is
to
be
rein-stafled,
use
care
not
to
damage
fan
wheels
during
removal
.
ff
the
blower
motor
fs
to
be
replaced,
cut
offfan
wheels
at
center
to
aid
in
removal
.
10
.
Installation
is
reverse
of
removal
.
When
installing
a
re-
placement
blower
motor,
instan
motor
into
cowlarea
before
installing
fan
wheels
.
Blower
motor
test
specifi-
cations
are
listed
in
Table
a
.
NOTE
-
On
replacementblowermotors
from
BMW,
thefan
wheels
come
unattached
to
aid
in
installation
.
Locatearrow
on
blower
motor
and
instan
fan
wheels
atthis
po-
sition
.
Be
sure
color
coolng
matches
.
Retain
fan
wheels
using
the
new
clips
.
See
an
authorized
BMW
parts
de-
partment
for
the
latest
parts
information
.
Table
a
.
Blower
Motor
Test
Values
Testingvoltage
13
VDC
Operating
voltage
9-15
VDC
Max
.
current
consumption
(approx
.)
12
amps
Maximum
speed
3,600-4,000rpm
Axialplay
(max
.
allowable)
1
.0
mm
(0
.04
in
.)
Blower
motor
resistor
pack,
replacing
The
blower
resistor
pack
is
clipped
into
the
upper
left
side
of
theheater
box
.
1
.
Remove
lower
left
dash
trim
panel
.
See513
Interior
Trim
.
2
.
Working
under
left
(driver's)
side
of
dash,
unclip
and
pulí
out
resistor
pack
from
sideof
heater
box
.
Remove
harness
connector
from
resistor
pack
.
See
Fig
.
7
.
3
.
Installation
is
reverse
of
removal
.
Heater
valve,
replacing
The
two-way
heater
valve
is
located
in
the
rear
of
the
engine
compartment
on
the
driver
side
.
The
solenoid
operated
valves
control
the
coolant
flow
through
the
dual-chamber
heater
core
.
1
.
Drain
engine
coolant
.
See
170
Radiator
and
Cooling
System
.
HEATING
AND
AIR
CONDITIONING
640-
3
uuiGO4I
Fig
.
7
.
Blower
fan
resistor
pack
(black
arrow)
and
resistor
pack
re-
ceptacle
(white
arrow)
below
left
sideof
dash
.
WARNING
-
Allow
the
cooling
system
to
cool
before
opening
ordraining
the
cooling
system
.
2
.
Disconnect
hoses
and
harness
connector
at
heater
valve
.
See
Fig
.
8
.
001[ó38b
Fig
.
S
.
Hoses
(A)
and
harnessconnector
(B)
at
heatervalve
.
3
.
Carefully
pull
heater
valve
out
of
rubber
mounting
and
pull
up
and
out
of
engine
compartment
.
4
.
Installation
is
reverse
of
removal
.
Use
new
hose
clamps
.
Inspect
hoses
and
replace
asnecessary
.
HEATER
AND
CONTROLS