It's me again. I hope you are not tired of me already.
I have two spare boards from two damaged AFMs found in junkyards.
Got them cheap and they still look pretty good. I can send you a photo
soon.

David

--- tinker man <tinkerman007@GMAIL.COM> wrote:

> Once again, me and my crazy ideas...
>
> With all the potential problems we're facing in our vans in general
> and it's fuel injection system specifically (which is most hard to
> debug in the van, with no on-board diagnostics support), the one I'd
> most want to get rid of is the AFM, who's mechanical deterioration is
> the hardest to fix, and finding a replacement is getting harder and
> harder (and expensive too, $200 just for a remanufactured unit).
> I remember reading lots of talk about this on the list, and wonder if
> after all the talk someone has actually come up with an alternative?
>
> So to get things going, a few questions:
>
> 1. Has anyone measured (or has the data of) the AFM transfer function,
> i.e. resistance or voltage output vs. air flow? For that matter, even
> a graph/table of resistance values/output voltage  vs. sensor plate
> movement would be helpful (it's probably logarithmic). Bentley
> provides a graph just for the temp1 sensor vs. temperature, but non
> for the variable resistance vs. air flow.
>
> 2. Anyone know what maximal airflow is to be expected in the air intake path?
>
> 3. Since I don't have a spare AFM to play with, does anyone have high
> resolution pics of an opened AFM? What's the function of the three
> black rings located around the pivot?
>
> 4. Does anyone know if the re manufactured AFM's offered at the
> BusDepot and others have a NEW resistance board or is it just the
> simple fix of moving the old one a bit sideways?
>
> Thanks,
> TM
>

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