Manual Saab 9-5 - 2000 (page 132 of 256) (English)

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132 Starting and driving

Useful tips on cold climate starting

If the engine has failed to start after several

attempts in very cold weather, press and

hold the accelerator down to the floor and

run the starter for 5–10 seconds. This will

prevent the engine being flooded (exces-

sively rich fuel-air mixture).

Now start the engine in the normal way – do

not touch the accelerator.

If the engine stalls immediately after starting

(e.g. if the clutch was released too quickly),

do not touch the accelerator when restarting

the engine.

Limp-home mode

The car’s engine-management system

includes a diagnostic function that checks

numerous internal functions after the

engine has been shut off. If a fault is

detected in the throttle system, the

engine-management system puts the throt-

tle system into the limp-home mode. This

limits idling control, disables the cruise-con-

trol system and limits the capacity of the A/C

compressor.

If the limp-home mode is in operation

(“Engine malfunction” light on, see below)

and the outside temperature is close to or

below freezing, you may need to use some

throttle on starting (some pressure on the

accelerator).

If the diagnostic system has detected a fault

in the engine-management system, the

“Engine malfunction” light on the main

instrument panel will come on (see page

49), indicating that you should have the car

checked as soon as possible by an autho-

rized Saab dealer.

Important

considerations for

driving

The engine-management system in the

Saab 9-5 is called Saab Trionic T7. The

system manages the ignition, fuel injection

and turbo boost pressure.

The Trionic T7 system developed by Saab

is an intelligent engine-management

system designed to achieve optimum driv-

ability under differing driving conditions.

The system makes adjustments automati-

cally, for instance, if the car is being driven

at altitude (oxygen-deficient air), for differ-

ent grades of fuel (AON 87–93) and for dif-

ferent load conditions.

1 Starting and driving

• Refrain from using full throttle before

the engine has warmed up (before

needle in mid-range on temperature

gauge).

• A safety function prevents the engine

from revving faster than 6,000 rpm by

limiting the induction air.

2 Stopping the engine

• Do not rev the engine immediately

before switching it off - stop the engine

when it is idling.

3 Regulating the boost pressure

• The system is optimized for fuel with an

octane rating of AON 90. One of the

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Saab 9-5 - 2000 Manual

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