WOT switch

[Phil@isham-research.demon.co.uk (Phil Payne)]

In message <34852593.821A8389@poboxes.com> Gerard writes:

> > Sounds like they should have stuck a MAC12D in.
>
> Welcome to VW/Audi South Africa. If it is obvious, then they won't
> do it. :) Besides, putting in a MAC12D would probably have been
> cheaper, and we can't be having that now can we?

No, it's about the same price because the hardware is identical (or
close to identical).  The difference is in the code - the MAC13 expects
to set the frequency valve duty cycle in 'cruise' mode using lambda
sensor input.  Without a lambda sensor, what does it do?

The MAC12D is (pretty well) identical to the MAC13 in hardware terms,
but provides table-driven frequency valve duty cycles in the 'cruise'
mode.

> Just a quicker question, could you give me *explicit* directions for
> confirming visually that the lambda sensor has been pulled? It's
> not that I just don't trust the VW/Audi tech guys here, it's just that
> I *really* don't.

a) No, I can't.  I've never seen a 200T with a lambda sensor.

b) I bet it was just disconnected and not removed at all.

--
 Phil Payne
 phil@isham-research.demon.co.uk
 Phone: +44 385302803  Fax: +44 1536723021