Idling speed

Fig 1: Identifying RPM Meter Reading

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The normal idle speed is shown in the table below but if necessary can be increased to 950 RPM. This can be done e.g. at high alternator load or high power steering assistance required. Immediately after starting, the idle speed is always increased and falls after a while to the normal idle speed.

This is done by regulating the ignition timing and air mass control.