Turbo Steve
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- Jan 11, 2000
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1999.5 and later A-4 TDI's have engine idle speeds varying from 882 - 945 RPM's and a VAG COM or VW Scan Tool can be used to raise or lower engine revolutions in the following manner:
Example (VAG COM)
1. Click on "Select"
2. Next, on "01 - Engine"
3. Then "Adaptation"
4. Under "Channel Number," scroll to Group 02.
5. Current Idle Speed will be displayed in the upper left-hand corner.
6. Under Channel Number, is a block with 5 digits in it, representing a numeric value of ECU code.
7. Enter your new desired value in place of the existing number or use the up and down arrows to change the existing digits.
8. Minimum value accepted is 32743, which equates to 882 RPM's.
9. Maximum value is 32803 which equals 945 RPM's.
10. Once a new value is entered, click on "Test" to see how this changes the Idle Speed.
11. Finally, don't forget to "Save" the new configuration before "Exiting."
Note: The ECU will only accept digits within the 32743 - 32803 range and whenever a value is entered outside of those digits and tested, the VAG COM will automatically adjust your selection to the highest or lowest acceptable value.
Saving the configuration is the same (whether or not you tested it) and out of range numerical values will be changed to the closest 32743 or 32803 figure.
Thanks to TDI Ray for pointing me in the right direction - Just remember "Engine Adaptation" as a keyword.
[ January 02, 2002: Message edited by: Turbo Steve ]</p>
Example (VAG COM)
1. Click on "Select"
2. Next, on "01 - Engine"
3. Then "Adaptation"
4. Under "Channel Number," scroll to Group 02.
5. Current Idle Speed will be displayed in the upper left-hand corner.
6. Under Channel Number, is a block with 5 digits in it, representing a numeric value of ECU code.
7. Enter your new desired value in place of the existing number or use the up and down arrows to change the existing digits.
8. Minimum value accepted is 32743, which equates to 882 RPM's.
9. Maximum value is 32803 which equals 945 RPM's.
10. Once a new value is entered, click on "Test" to see how this changes the Idle Speed.
11. Finally, don't forget to "Save" the new configuration before "Exiting."
Note: The ECU will only accept digits within the 32743 - 32803 range and whenever a value is entered outside of those digits and tested, the VAG COM will automatically adjust your selection to the highest or lowest acceptable value.
Saving the configuration is the same (whether or not you tested it) and out of range numerical values will be changed to the closest 32743 or 32803 figure.
Thanks to TDI Ray for pointing me in the right direction - Just remember "Engine Adaptation" as a keyword.
[ January 02, 2002: Message edited by: Turbo Steve ]</p>