Dwell angles

[Phil@sievers.com (Phil Payne)]

In message <1997May06.135802.1772.743312@pu-smtp.radio.bbc.co.uk> paul.heneghan@bbc.co.uk (Paul Heneghan) writes:

> >Not at 3000rpm, we're not.  The ISV shuts when the idle switch goes open
> >circuit.
>
> Yours does, mine does, but from the sound of it, Mike's doesn't.
>
> Mike, you are getting a reading directly proportional to speed.  Check that
> the meter is set to dwell and that you are measuring across the ISV.  (If
> you measure between ground and the switching terminal of the ISV, then you
> will get inverted values, because from what I can dimly remember, the ISV
> has 12V on one side and the switched voltage on the other).

It sounds more like he's talking about the frequency valve, not the
ISV.  That _does_ have a reading proportional to speed.

Audi's documentation for the ISV doesn't mention dwell angles, only
current.  430ma at 800rpm, on the ur-quattro.

--
 Phil Payne
 Phone: +44 385302803  Fax: +44 1536723021  CIS: 100012,1660