Saab 1987 900 Owner's Manual page 8

6 Instruments and controls
comes on while you are driving, stop the car
immediately, switch off the engine and
check the oil level. Ifthe oil light stays on,do
not drive the vehicle, as severe engine dam-
age can result.
Low fuel warning light
This lamp will glow continuously when the
quantity of gasoline in the fuel tank is less
than approximately 1.8 U.S. gallons. Refuel
at your next oppurtunity.
Combination instrument
Fuel gauge
This gauge accurately measures the quan-
tity of fuel remaining in the tank.
Temperature gauge
This indicates the temperature of the
engine coolant. If the needle enters the red
zone repeatedly, stop as soon as possible
and check the level ofthe coolant.
WARNING! .
Do not operate the engine at full throttle
until the needle on the temperature
gauge has entered the green zone.
Speedometer, odometer and trip meter
The odometer records the distance in miles,
and the trip meter in miles and tenths.
The reset button for the trip meter is loca-
ted in the lower section of the meter. Push
to reset.
Pressure gauge, Turbo
The pressure gauge indicates the charging
pressure in the inlet manifold. At low
engine loads and during engine decelera-
tion, a vacuum will be present in the mani-
fold. In such cases, movement ofthe needle
will be within the white zone. At increased
loads or engine speeds, the turbo compres-
sor will increase the charging pressure in
the inlet manifold. In this case, the needle
will move into the orange zone. The char-
ging pressure will not normally be high
enough to cause the needle to enter the red
zone, since the engine is equipped with a
charging pressure regulator (wastegate).
However, under full load and with suffi-
ciently high fuel octane, the needle may
briefly enter the red zone. There is also an
overpressure safety switch to protect aga-
inst excessive pressure which could damage
the engine.