Audi A6 1.9TDi '98 81kW poor power until 3 krpm [Video] [VAGCom Log]

Arturasz

Active member
Joined
Jan 21, 2008
Location
Vilnius, Lithuania
TDI
1.9 TDI
Hello, I have problem that almost half year ago lost power from 1500-2500 rpm. Loss of power I mean that turbocharger doesn't generate enough boost till 2600 rpm. Here is crappy video with Scangauge II and wide open throttle.
http://www.youtube.com/watch?v=6cVF96XfeP0&feature=player_embedded
For better accuracy I am attaching VAGCom log file where is seen rpm's and boost pressure (3rd geat WOT):

I like to drive in eco mode with low rpms. Thought that my turbochargers VTG has clogged. But after reading forum i understood that VTG was malfunctioning it would be opposite good power but then car switches to limp mode. Mine doesn't do this.
Please give advice what to do.
P.S. There is no engine errors.
 
Last edited:

jcrews

Top Post Dawg
Joined
Jul 28, 2007
Location
Round Rock, TX - VCDS
TDI
All gone
Look at the vane actuator first. The diaphragm is either ruptured or the vacuum source is missing (bad hoses or bad control valve).
 
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