Saab 2007 owner manual Important considerations with catalytic converters

Starting and driving 145

Important considerations with catalytic converters

NOTICE

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.

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 a workshop as soon as possible. We recommend that you con- tact an authorized Saab dealer.

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3		IB3879
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Oxygen-sensor-controlled injection system

1Engine control module

2Oxygen sensor (lambda probe)

3Catalytic converters

•If the engine fails to start (in very cold weather or if the battery is flat), 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 properly, turn off the engine and get in touch with a workshop for advice. We recommend that you contact an authorized Saab dealer.

•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. Stop jump-starting if the engine fails to start immediately.

NOTICE

If the car runs out of fuel, it is possible for air to get into the fuel system. If this happens, the catalytic converter may overheat and be damaged.

Failure to follow these directions could result in the catalytic converter and associ- ated components being damaged, and could represent a breach of the warranty conditions.