Vauxhall Workshop Service and Repair Manuals

Conditions for Checking

Nominal Value

Affected terminals:                   -

Possible trouble codes:             -

Not Model Year 95

Engine running at idle speed, operating temperature

Vehicle stationary

Press key F6 in the system main menu, select the adjustment mode with key F0. Using the arrow keys, select the desired adjustment mode and confirm with YES. Follow the instructions in the TECH 1 display.

The adjustment can only be performed when:

No trouble codes are stored

The battery voltage is higher than 12.5 V

The coolant temperature is higher than 80 °C/176 °F

The vehicle speed equals 0 km/h (0 mph)

The idle speed conditions are fulfilled (see F0:Data List nos. 05, 06, 34 and 42):  

IAC CNTR. ENABLE:  ACTIVE

Desired idle speed

The engine speed set previously must be displayed in F0:DATA LIST no. 38

Note:

The nominal engine speed at idle speed can be altered using TECH 1 and permanently stored in the engine control unit.

The nominal idle speed may only be altered within the defined limits specified by the General Operating Permit. It should only be adjusted if the engine is subject to severe vibration in the basic setting and this can be lessened by altering the engine speed.

Once the nominal idle speed has been altered once, F0:DATA LIST no. 39 must display ACTIVE. The display may only return to INACTIVE when the engine speed has been reset.

See: F1:ECU RESET, IDLE SPEED