On Thu, 10 May 2007 14:39:57 -0800
"Al Gietzen" <ALVentures@cox.net> wrote:

> On Thu, 10 May 2007 09:31:30 -0800
> "Al Gietzen" <ALVentures@cox.net> wrote:
>
>
> >
> > BTW; preliminary results indicate that the issue I've had with the
> > spontaneous changes of settings has been resolved.
>  
> > Al
> >
> <snip>
>
> What was causing it?
>
> Bob W.
> --------------------
>
> Don't know exactly.  Added additional filtering on the circuit board :
>
> 1000pf capacitors were added to:
>
> All fuel injector signals
> All ignition control signals
> RX input
> TX output
>
> 47uf, 16V tantalum were added to each processor
>
> Pin 8 of connector is now grounded.
> Pin 28 of connector is now grounded.
>
> Al
>

Thanks Al,

I was wondering if it had anything to do with how the cables were
routed, or their length.  I guess that's indeterminate but the noise
was getting in there from somewhere.  I hope you really have it fixed
as those kinds of problems are a real pain.  I was having an issue with
noise on my EM2 display and that went away with some extra filters that
Tracy suggested.  I don't really know why my unit was more sensitive
than most either.

Bob W.

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