Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

33

SPARK ADVANCE

Engine running at idle speed, operating temperature

-

40, 41

Switch off all consumers

Omega - B

5 to 12 °CA

Vectra / Calibra

2 to 8 °CA

Note:

The firing angle is a value calculated in the control unit and is influenced by various other parameters (e. g. coolant temperature, intake air temperature, idle speed stabilization). The firing angle cannot be adjusted by mechanics.

The nominal value range applies for the above conditions at a normal ambient temperature of approx. 20 °C / 68 °F (intake air temperature lower than 40 °C / 104 °F). If the temperature deviates from this, or the engine has run for an extended period of time at idle speed, the firing angle may vary in the range from 5 to 16 °CA (Omega - B) or 0 to 10 °CA (Vectra / Calibra).