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Home >> Saab >> 2001 >> 9-3 Base, 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> TRIONIC T7 Fuel Control System >> Technical Description >> Starting fuel >> Pre-injection
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Starting fuel: Pre-injection

When the ignition is turned on, the fuel pump relay will operate for one second to build up fuel pressure.

As soon as the control module detects the crankshaft moving, there will be a simultaneous injection with all four injectors. The amount of fuel injected depends on the engine coolant temperature.