code 44 - why?

[Ernst den Broeder]

Lyndon,

I think you might have given me the right path to chase.  I just came back from
another test drive, this time taking another stab at making the 350 bin look
like a 305 bin and I didn't get the code 44 this time.  Thanks.  :-)

-Ernst


Programmer wrote:

> Your BL's should be around 150 to set code 44...Disconnect your MAF and see
> if the
> code 44 resets. If not, I'd still say the MAF tables are off--especially
> when you program
> a 305 bin and it solves it. Backpressure shouldn't be an issue--it'd be more
> of a power
> problem.
>
> Lyndon.
> ----- Original Message -----
> From: den Broeder, Ernst <edenbroe at cisco.com>
> To: <gmecm at diy-efi.org>
> Sent: Wednesday, May 16, 2001 12:53 PM
> Subject: Re: code 44 - why?
>
> > Not exactly, but close.  My BLM's were within range when the code 44 set.
> >
> > -Ernst
> >
> >
> > At 12:40 PM 5/16/2001 -0600, you wrote:
> > >Are the MAF tables exactly the same between bins ?
> > >
> > >Lyndon.
> > >----- Original Message -----
> > >From: den Broeder, Ernst <edenbroe at cisco.com>
> > >To: <gmecm at diy-efi.org>
> > >Sent: Wednesday, May 16, 2001 11:52 AM
> > >Subject: code 44 - why?
> > >
> > >
> > > > I had an interesting experience with my TPI setup in the past 2 days
> since
> > > > I got it running.  It's a 1989 MAF '165 system on a 5.0L with TPI.
> > > >
> > > > I have been using AUJM (350, auto, 3.27, FED) and it keeps setting
> code 44
> > > > on me.  I switched over to a APYS (305,M5,3.45) and the problem goes
> > >away...
> > > >
> > > > Could someone please explain why I see this behavior?  I checked
> through
> > > > the archives and found a few tidbits that lead me to believe it's just
> a
> > > > case of the definition of what is lean and what is rich...?   What I
> don't
> > > > understand is why it would be different for different engine
> > > > displacements.  Could it be because the O2 sensor is sensitive to the
> > >extra
> > > > back pressure a 350 (as opposed to a 305) would apply against a set of
> > > > factory exhaust manifolds?
> > > >
> > > > Ernst
> > > >
> > >
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