Attention: Checking and adjusting the idle speed, CO content and ignition timing should be carried out together. The lambda probe remains connected.
Check the closed condition of the throttle position sensor idle contacts. To do this, alternately plug in and pull out the plug of the end throttle sensor. This should change the ignition timing, idle speed and averaging factor.
Start the engine and let it idle.
Check the averaging factor:
- allowable limits 26-30%;
- face value: 29±1%.
If required, change the averaging factor with the idle speed adjusting screw -A-. To do this, fully screw in the screw, and then unscrew it until the required value is reached.
For control, check the idle speed. Should be: 800-900 rpm.
Attention: If it is not possible to achieve the required averaging factor with the idle speed adjusting screw, find the cause in the fault table and eliminate it.
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