Saab 1987 900 Owner's Manual page 69

6. Charge indicator lamp lights up
with engine running.
A.
Broken or slack alternator drive belts.
B.
Malfunction in voltage regulator.
C. Malfunction in alternator.
D. Check fuses.
7. Discharged battery
A.
Slipping alternator drive belts.
B. Defective or worn out battery.
C.
Frequent use of high drain equipment,
such as headlights, combined with short
trips.
D. Malfunction in voltage regulator or
alternator.
8.
O~l press~re indic~tor
lamp lights up
WIth
engme runnmg.
A.
Malfunction in engine lubrication sys-
tem causing low oil pressure.
B. Oil level in sump low. Top up to max.
level on dipstick.
9. EXH Indicator lamp illuminates (8
valve)
Illuminates every 30,000 miles as a
reminder to perform emission control
system maintenance. Must be reset by
dealer after service. This lamp does not
indicate engine malfunction.
Car care and scheduled maintenance 67
AC troubleshooting
Ifthe air conditioning system is malfunctio-
ning, check the following items yourself. If
these checks fail to reveal the cause of the
problem, contact an authorized Saab dea-
ler.
Inadequate cooling
• Check that the temperature control and
the air distribution control are correctly
set.
• Check that the condenser (located in
front of the radiator) has not become
clogged by dirt or insects.
• Check that the drive belt for the com-
pressor is not loose, damaged or worn.
• Check the temperature of the engine. If
the pointer on the temperature gauge
has entered the red zone, the AC system
will have been switched offautomatical-
ly.
• Check the fuses for the fans and com-
pressor.
Routine AC maintenance and servicing
1 The air conditioning system should be
checked every spring, preferably by an
authorized Saab dealer.
2 Each time the car is serviced, the com-
pressor drive belt and mounting bolts
and the electro-magnetic clutch should
be checked.
3 Keep the condenser and radiator free
from insects or other dirt to avoid clog-
ging. When washing the car, use a hose
to flush the surfaces ofthe radiator and
condenser (located in front of the
radiator) thoroughly, both through the
grille and from inside the engine com-
partment. Never fit wire mesh or any
other form of screening in front of the
radiator as this will substantially re-
duce the cooling effect.
4 During the winter, the air conditioning
system should be switched on once or
twice a month and run for between 5
and 10 minutes to prevent deterioration
ofthe gaskets and seals in the compres-
sor. This should be done with the engine
at normal running temperature and
with the car cruising at moderate
speed. (The compressor is lubricated by
a special oil which circulates with the
refrigerant.)
NOTE! The air conditioning will not
cycle on below 38°F.
When the air conditioning system is
running, condensation will form on the
evaporator. When the car is parked, this
condensation may drain off and form a
small pool of water under the car.
Appearance care
Care ofpaintwork
To keep its gloss and finish, the paintwork
needs proper care. If the paintwork is
damaged, e.g. by a flying stone, the spot can
be cleaned and covered with air-drying