Thanks for that, Mark.

I'll first try my spare ECU, and if that doesn't provide any answers
I'll measure the voltage on the Temp 2 sender.

My hunch: It ain't Temp 2. It will be deeper, darker, less easy to fix
than a simple sender. I'm voting (seat of the pants, pure guess, based
on nothing) a fouled plug. If the plugs were easier to pull -- or, more
actually to put back in -- I'd pull them and look. Is there some kind of
handy plug starter tool for these engines?

-- RJS

On Mon, 2011-06-06 at 15:39 -0700, mark drillock wrote:

> David, I don't fool around much with Digijet though I may start to since
> I recently got an 85 (an engine conversion is more likely). The TempII
> sensor for the Digijet is the same one as for the Digifant in Syncros.
> In circuit with key on it reads about 1 volt at cold engine and .3 volts
> at hot engine, Digifant.
>
> Mark
>
> David Beierl wrote:
> >
> > If you're unlucky (or lucky - you pick) it's a connection problem
> > i.e. bad solder inside the ECU. If that's the case the voltage
> > across the sender will be low, but the ECU will think it's
> > high. Mark - do you (or anyone) know the source impedance on that
> > signal? Or have a voltage/resistance pair taken at some lowish temp?
> >