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owners manual Saab 9-3
owners manual Saab 9-3 - year of production: 1998, 1999, 2000, 2001, 2002 - Saab 9 3 I 1 YS3D owners manual EN
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from owners manual to the vehicle Saab 9-3, year of production 1998 - 2002:
Starting and driving155
2 Stopping the engine Saab 9-3 Viggen: The Saab 9-3 Viggen has Limp-home
• Do not rev the engine immediately a high-performance engine which means The car’s engine management system has
before switching it off - stop the engine that a certain amount of care should be a diagnostics function that, once the engine
when it is idling. exercised, in particular when accelerating in has been switched off, checks a number of
3 Regulating the charging pressure the lower gears. This is especially important internal functions. If a throttle valve fault is
when the road surface is slippery to avoid detected, the engine management system
• The system is optimized for fuel with an the driving wheels losing their grip.will initiate limp-home mode for the valve.
octane rating of AON 90. For cars with This means, for example, that idling speed
205 hp engines and the Viggen, the NOTE regulation will be impaired, the cruise con-
system is optimized for AON 93. One of trol system will be inoperative, and the
the advantages of the system is that it If constant knocking occurs every time a capacity of the A/C compressor will be lim-
enables the engine to be run safely on load is put on the engine, this indicates a ited.
lower-grade fuel, although not lower malfunction in the system. When starting the car in limp-home mode at
than AON 87. However, engine perfor-Have the car checked without delay by an temperatures below 32°F (0°C), depress
mance will fall off slightly, and heavy authorized Saab dealer. the accelerator slightly.
loading should be avoided. For best If the diagnosis function detects any faults in
performance you should use the rec- the engine management system, the
ommended grade of fuel, AON 90 “Engine malfunction (CHECK ENGINE)
(205 hp engine and Viggen AON 93).NOTE “ indicator in the main instrument panel
• The maximum boost pressure is If the engine is being run with the car on a will light up (see page 63). The car should
adjusted automatically to the knocking rolling road or dynamometer, longer than be checked as soon as possible at an
or pinging tendency of the engine. for a standard state emission inspection, authorized Saab dealer.
Occasional, short-lived knocking when to ensure adequate cooling, air must be
the engine is under a heavy load is per-blown into the engine compartment and
fectly normal; the extent will depend on under the car at a rate equivalent to the
the grade of fuel in the tank. ram-air effect that would be obtained at
• Isolated instances of knocking are the corresponding road speed.
more likely to occur with low-octane
fuel. This controlled form of knocking,
followed by a reduction in the boost
pressure, is a sign that the wastegate is
functioning and is perfectly safe for the
engine.
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year of production from: 1998
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Saab 9 3 I 1 YS3D owners manual
pages 152 - 158
Saab 9 3 I 1 YS3D owners manual
page 155 / 260
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