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Saab 900 1983 - B. General Information; Engine Trouble Shooting

Saab 900 1983
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B.
General Information
ENGINE
TROUBLE
SHOOTING
1. Engine will not
start-starter
cranks engine
In normal manner
A.
No
fuel in tank.
B.
Fuel pump not
running-blown
fuse, cor·
roded connections, faulty relay or discon·
nected lead wire.
C.
No spark at spark plugs.
a.
Loose electrical connections.
b.
Moisture or cracks
In
distributor
cap.
D.
Engine
flooded-spark
plugs fouled with
gasoline.
2.
Engine
starts-runs
rough,
misfires,
low
power.
NOTEI
Misfiring
should be corrected
1m·
mediately to prevent overheating
of
the
catalytic converter.
A.
Spark plugs fouled, worn or In need
of
adjustment.
B.
Spark plug cables not properly plugged
into
distributor
cap or onto spark plugs.
C.
Loose or
corroded
connections-low
voltage leads
to
coil.
D.
Engine oil
filler
cap or
dipstick
not seated
admitting excess air through crankcase
vent system.
E.
Fuel Injection system
in
need
of
adjust·
ment.
3.
Stalling
at
Idle,
rough
operation
during
engine warm·up and hesitation or lack of
power on acceleration.
A.
Unscheduled servicing
of
the Lambda
Control system may
be
necesary. If so,
this
should
be
performed
by a Saab
dealer.
B.
Unscheduled servicing
of
the
EGR
sys·
tem may
be
necessary. If
so
this should
be
performed by a Saab dealer.
C.
De
cel fuel shut off system may require
unscheduled servicing.
4.
Improper Idle
speed-too
fast or too slow.
A.
Idle speed air bleed adjustment incorrect
or lock nut loose.
B. Decel dashpot out of adjustment (fast
idle).
C.
Idle alrlfuel mixture out of specification.
D.
Throttle stop screw incorrectiy set. (Note:
NOTEI Stop screw Is for adjusting but·
terfly rest clearance and Is
not
to be used
for making
Idle speed adjustments.
E.
Decel fuel shut off malfunctioning.
F.
Idle speed Is affected by large changes
In
altitude (idle increases as elevation
In
·
creases due to reduced ambient pressure
and vice versa).
5.
Charga Indicator lamp falls to
light
when Ig·
nllion
Is switched on.
A.
Bulb burned out.
B. Discharged battery or loose battery
c
a·
ble.
C.
Improper
wiring
to
voltage
regulato
r
causing
an
open circuit.
6.
Charge Indicator lamp
lights
up with engine
running.
A.
Broken or slack alternator drive belt.
B.
Malfunction
in
voltage regu lator.
C.
Malfunction
in
alternator.
7.
Discharged battery
A.
Slipping alternator drive belt.
B.
Defective or worn out battery.
C.
Frequent use of hi
gh
drain equipment,
such as headlights, combined with short
trips.
D.
Malfunction
in
voltage regulator or
al
·
ternator.
8.
011
pressure Indicator lamp
lights
up with
engine running.
A.
Malfunction
In
engine lubrication system
causing low oil pressure.
B.
Oil level
in
sump extremely low.
9.
EXH
Indicator lamp illuminates
Illuminates every 30,000 miles as a reminder
to perform emission control system main·
tenance. Must
be
reset
by
dealer after
servo
ice. This lamp does not
indicate
engine
malfunction.
APPEARANCE
C
ARE
Care of paintwork
To
ke
ep Its gloss and finish, the palntwork
needs proper care.
If the palntwork Is damaged,
e.g.
by
a flying stone, the spot can
be
cleaned
and covered
with
air·drying touch·up paint.
Touch·up
in
the standard Saab colors can
be
purchased from your Saab dealer.
Washing
The
car should
be
washed frequentiy. When It is
new, it should
be
washed by hand using only
cold water and a clean, soft brush attached to a
hose. Automatic car washes should
be
avoided
during the first few months. After five to six
months the
paintwork
has hardened and to
make washing easler, a car shampoo or mild
washlng·up liquid may
be
added to the water,
which may
be
warm but not hot. Even the under·
body should
be
washed regularly and special
attention should
be
given to the wheel hous·
53