volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Engine - High Idle After Cold Start|Page 1625 > < Engine - High Idle After Cold Start|Page 1623
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Idle CO And Idle Speed Adjustments

4.

Adjust the idle speed using the idle air bypass screw to:

800 ± 50 rpm

NOTE: This idle speed setting is used only for CO adjustment. The idle speed must be adjusted to a different specification after adjusting the CO

volume.

5.

Check the CO specification.

6.

Record the CO value before adjusting.

Digifant II Idle CO Graph

7.

CO reading must fall within band on Checking Tolerance graph.

8.

If CO reading does not fall within the tolerance band, proceed with adjustment.

9.

Remove the tamper-proof plug from the CO adjustment screw location on air flow sensor by drilling into plug with a:

0.098 in. (2.5 mm) drill bit

Engine - High Idle After Cold Start|Page 1625 > < Engine - High Idle After Cold Start|Page 1623