SV: SV: VS: MC2 running very lean

[Dag Bøsterud]

The pumps was replaced last summer with a new Bosch 040-pump, new filter and
new injectors, but of course it could be failing. I've also checked voltage
at the pump, about 13,7V.

I haven't checked fuel pressure from the pump, I've only checked
system pressure (6,5 bars) and control pressure (3,7 bars), all within specs
to my knowledge.

/Dag

-----Opprinnelig melding-----
Fra: Robert Myers [mailto:bob at chips-ur-s.com] 
Sendt: 28. oktober 2011 13:35
Til: Dag Bøsterud
Emne: Re: SV: VS: MC2 running very lean

*This message was transferred with a trial version of CommuniGate(r) Pro*

How is your fuel pressure, Dag?  Low fuel 
pressure will cause very lean conditions which 
get absolutely horrid as boost comes up even just 
a little.  If that is the problem then the only cur is a new pump.

Bob


At 07:23 AM 10/28/2011, you wrote:
>*This message was transferred with a trial version of CommuniGate(r) Pro*
>I ran the car without the OXS today. No change what so ever :/ Ran just as
>
>shitty. The car runs just the same when cold, although I don't floor it
when
>it's cold, but as mentioned before it will start to misfire before the
turbo
>kicks in.
>
>
>
>I ohmed the coolant temp sensor for the ECU when the engine was hot, and
got
>about 89 ohms. This should be okay, Bentley book says 60-1000 ohms when
>coolant is 20 C (68 F) minimum.
>
>
>
>/Dag
>
>
>
>Fra: Tony Hoffman [mailto:auditony at gmail.com]
>Sendt: 27. oktober 2011 01:50
>Til: Dag Bøsterud
>Kopi: quattro at audifans.com
>Emne: Re: VS: MC2 running very lean
>
>
>
>It is possible the ECU is bad, but I'd eliminate everything else first.
Have
>you run it with the O2 sensor unplugged? How does the car run when cold?
>Have you ohmed out the Coolant temp sensor?
>
>
>
>Tony
>
>On Wed, Oct 26, 2011 at 2:03 PM, Dag Bøsterud <dag.boesterud at little-e.com>
>wrote:
>
>I've double checked everything once more. I'm lost. I really can't find any
>clue as to why it's running so lean.
>
>
>
>What about the ECU? I have a chip from Ben Swann.
>
>
>
>/Dag
>
>
>
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No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1411 / Virus Database: 2092/3979 - Release Date: 10/27/11