[Biturbos4] Engine DTC help request

[Philip Pace]

As much a conspiracy theorist as I am, I doubt it. Ethanol is more expensive than
gas so I'd guess companies put as little of it in as required by law. While Ethanol
might be the culprit, I wouldn't worry about them putting too much in.

--- Keman <keman at interwolf.net> wrote:
> So tell me, has your local fuel station started using ethanol?
> 
> Or.. perhaps.. more ethanol?
> 
> Ethanol's stoic is around 9-10:1. As opposed to what we call "gasoline" 
> which is around 14.7:1.
> 
> For a given mixture, the O2 sensor will see it as running lean the more 
> ethanol you use, and try to richen it up.
> 
> I'm starting to want a handheld sensor like what's in the flex-fuel cars 
> to see exactly how much is in the gas I'm pumping. "18%? The pump says 
> 10..."
> 
> It could be something else. But these days, right now, with what's going 
> on with gasoline and ethanol, I trust no oil company.
> 
> I'm back in the turbo world, btw. It's not an S4. Specifically, the 
> license plate says NOTANS4. It's an '88 ford thunderbird turbocoupe. My 
> beatermobile, alive after a year of rebuilding it. My '05 S4 is getting 
> 14-15 mpg, and the 50 mile commutes have just been killing me with gas 
> prices. I'm not getting rid of it, but it's going to do something less 
> than the 23k miles that I just put on it for the first year of ownership 
> now.
> 
> Because of this, I'm more interested in ethanol being in my cars than 
> ever. That is, I hate the stuff.
> 
> - Keman
> 
> 
> On Tue, 16 May 2006, Ti Kan wrote:
> > Hi all,
> >
> > I ran a fault scan with VAG-COM on my 2001.5 S4 yesterday and
> > the ECU reported the following:
> >
> > ---------
> > Control Module Part Number: 8D0 907 551 M
> >  Component and/or Version: 2.7l V6/5VT     G   0001
> >           Software Coding: 06711
> >            Work Shop Code: WSC 06435
> > 1 Fault Found:
> > 17538 - Fuel Trim: Bank 2 (Mult): System too Lean
> >        P1130 - 35-10 - - - Intermittent
> > ---------
> >
> > Searching the VAG-COM mailing list and Audiworld forums on this DTC
> > gave a few references to MAF going bad.  But most of those referred to
> > the earlier, trouble-prone Bosch MAFs rather than the Hitachi MAF that
> > my car has.  At any rate, the DTC says it's intermittent, so I cleared
> > the code and went for a test drive, accelerating the car up to 6000 rpm
> > a couple of times.  Re-checking with VAG-COM, and the DTC did not return.
> >
> > So, all seems ok at this point, but I wonder if the DTC might be a sign
> > that the diverter valves are wearing out?  Mine are the original ones
> > that came with the car.
> >
> > Any BTDTs would be appreciated.
> >
> > -Ti