Bedienungsanleitung Saab 9-3 - 2000 (Seite 137 von 236) (Englisch)

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137Starting and driving

Saab 9-3 Viggen: The Saab 9-3 Viggen has

a high-performance engine which means

that a certain amount of care should be

exercised, in particular when accelerating in

the lower gears. This is especially important

when the road surface is slippery to avoid

the driving wheels losing their grip

Important considerations with cata-

lytic converters

The catalytic converter is an emission-con-

trol device incorporated in the car’s exhaust

system. It consists of a metal canister with a

honeycomb insert, the cells of which have

walls coated in a catalytic layer (mixture of

precious metals).

To ensure that the catalytic converter con-

tinues to function properly, and also to avoid

damage to the converter and its associated

components, the following points must be

observed:

• Have the car serviced regularly in accor-

dance with the service program. The fuel

and ignition systems are particularly

important in this context.

• Always be alert to any misfiring of the

engine (not running on all cylinders) and

any loss of power or performance. At the

first sign of a malfunction, reduce speed

and take the car to an authorized Saab

dealer as soon as possible.

• If the engine fails to start (in very cold

weather or if the battery is dead), the car

can be push started (manual gearbox

only) or started using jumper cables to a

donor battery. However, as soon as you

have started the engine, it is important

that it runs on all cylinders. If it is misfiring,

allow it to idle for up to five minutes to give

it time to settle and run smoothly. If, after

this time, the engine still fails to run prop-

erly, turn off the engine and get in touch

with an authorized Saab dealer for advice.

• Never park the car on dry grass or other

combustible material. The catalytic con-

verter gets very hot and could therefore

start a fire.

• Never drive off if the engine is misfiring.

• If you jump start the car when the engine

is already up to normal temperature, the

engine must start to run on all cylinders.

NOTE

If constant knocking occurs every time a

load is put on the engine, this indicates a

malfunction in the system.

Have the car checked without delay by an

authorized Saab dealer.

NOTE

If the engine is being run with the car on a

rolling road or dynamometer, longer than

for a standard state emission inspection,

to ensure adequate cooling, air must be

blown into the engine compartment and

under the car at a rate equivalent to the

ram-air effect that would be obtained at

the corresponding road speed.

NOTE

Use only unleaded gasoline. Leaded gas-

oline is detrimental to the catalyst and

oxygen sensor and will seriously impair

the function of the catalytic converter.

IB1315

Engine-management system with catalytic

converter

1 Engine control module

2 Oxygen sensor (lambda probe)

3 Catalytic converter

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Saab 9-3 - 2000 Seite 137

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