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yanliz
Joined: 01/01/2009 Posts: 15 Karma: +0 / -0 Location: Essen 2004 Audi A4 Avant Free account, no CAN development support
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26-06-2010, 1:32 Subject: AVF Idle Speed Control - Cylinder 3 |
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Good evening.
Either the search function isn't working, or I'm too stupid to use it... anyway, I always get an error message.
I would actually just like to ask if, based on your experiences, I should be concerned about the slow pressure drop in the 3rd cylinder. The value remains almost constantly between +0.30 and +0.40. Apparently, the 2nd cylinder is compensating for this, and it remains at the same value but in the negative range.
Should I get the valve timing and PDE checked, or should I just leave it alone as long as the engine is running? Audi A4 Avant 1.9TDI MJ2004
MKB: AVF, GKB: HCF 6-Gang
Translated on 18-09-2026, 13:57.
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Steffen W Profi-Schrauber

Joined: 07/05/2008 Posts: 1276 Karma: +104 / -0 Location: Altenburg
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26-06-2010, 5:52 Subject: AVF Idle Speed Control - Cylinder 3 |
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Leave it like that. That's perfectly fine. Passat Variant BGW 2005
2024 Dacia Duster blue dci 115
Translated on 18-09-2026, 13:58.
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yanliz
Joined: 01/01/2009 Posts: 15 Karma: +0 / -0 Location: Essen 2004 Audi A4 Avant Free account, no CAN development support
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26-06-2010, 10:46 Subject: AVF Idle Speed Control - Cylinder 3 |
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Ok. Thank you.
I have a question about air mass and boost pressure overshoots. Last night, I logged data from measurement blocks 3, 6, and 11. The measurements were taken under full load in 4th gear, followed by a brief period in 5th gear.
Are the values okay? Audi A4 Avant 1.9TDI MJ2004
MKB: AVF, GKB: HCF 6-Gang
Translated on 18-09-2026, 13:58.
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yanliz
Joined: 01/01/2009 Posts: 15 Karma: +0 / -0 Location: Essen 2004 Audi A4 Avant Free account, no CAN development support
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29-06-2010, 19:57 Subject: AVF Idle Speed Control - Cylinder 3 |
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Please let me know if the logs are incorrect! Or why doesn't anyone want to respond...? Audi A4 Avant 1.9TDI MJ2004
MKB: AVF, GKB: HCF 6-Gang
Translated on 18-09-2026, 13:59.
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dieselschrauber Administrator


Joined: 04/12/2002 Posts: 18117 Karma: +800 / -0 Location: St.Gallen 2018 Volkswagen T6 
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29-06-2010, 22:06 Subject: AVF Idle Speed Control - Cylinder 3 |
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Perhaps because it's been asked a thousand times already, and there's more than enough information to be found using the search function and in the specialized articles?
Translated on 18-09-2026, 13:59.
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