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 F0. Select the desired type of adjustment using the arrow keys and confirm with YES. Follow the instructions in the TECH 1 display.

Adjustment can only be performed if:

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

F0:DATA LIST no.:40 must display the engine speed set previously.

Note:

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

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

After the nominal idle speed has been altered, F0:DATA LIST no.:41 must display ACTIVE. The display may only return to INACTIVE when the engine speed is reset.

See: F1:ECU RESET, IDLE SPEED