[BiturboS4] MAF Problem?

[Ti Kan]

Have you tried searching the VAG-COM mailing list message archives?
If you're not a member of that list, I think you'd find it beneficial
to subscribe:
	http://groups.yahoo.com/group/vag-com

If you don't find what you need, there are lots of knowledgeable
people there who would be able to help.

You should be a registered owner of VAG-COM if you want to post and
get support on that list though...  Uwe doesn't think too highly of
people who tries to take a free ride on his product.

-Ti
2003 A4 1.8T multitronic
2001 S4 biturbo 6-sp
1984 5000S turbo
1980 4000 2.0 5-sp
--
    ///  Ti Kan                Vorsprung durch Technik
   ///   AMB Laboratories, Sunnyvale, CA. USA
  ///    ti at amb.org
 //////  http://www.amb.org/ti/
///

Russell Romano writes:
> My car (A 2000 A6 2.7T 6spd) has thrown the following codes this morning:
>
> P1128 (VAG 17536) and P1130 (VAG 17538).  These indicate "Long Term Fuel Trim mult. Bank 1, System too lean", and "Long Term Fuel Trim mult. Bank 2, System too lean" respectively.
>
> The shop had corrected a vacuum leak that they believed triggered this problem last week and all was good... but it came back again in pretty short order.
>
> There was apparently a technical service bulletin saying NOT to replace the MAF (Mass Air Flow) sensor right away... but that is how they are leaning now.
>
> Has anyone experienced this particular failure with their 2.7T's?  What was the eventual outcome?
>
> The car is apparently running rich to compensate for the "too lean" condition and my fuel economy is quite bad and power is lacking. :/
>
> Any insight would be appreciated.