[Shop-talk] PO174 - PO176 OBD CODES

[David Scheidt]

On Dec 13, 2007 5:56 AM, scottmryan <scottmryan at netzero.net> wrote:

> I get a 'long term fuel trim too lean' from both banks on a 98 audi a4 from
> using e85, which could be caused by a dirty fuel filter, in tank 'sock' or
> too low pressure fuel pressure regulator. (or fuel pressure regulator vacuum
> line? although that leaking should be fuel trim too rich) probably unlikely
> to be the oxy sensors since it's both banks.

Is the Audi supposed to be able to run E85?  Flex fuel vehicles have a
sensor that tells the computer what the fuel mix is.  Ethanol requires
a different air-fuel ratio.


-- 
David Scheidt
dmscheidt at gmail.com