quick question, typ 89

[Ben Swann]

Huw,

The system I pulled from '89 model 80 was not Motronic, but a late version
of mechanical fuel injection with knock sensing, essentially the 4 Cyl
version of CIS-E3.  To my surprise, there was only one control unit which
integrated the fuel and ignition systems - everything goes to one brain.

Ben
----- Original Message -----
From: "Huw Powell" <audi at humanspeakers.com>
To: "Ben Swann" <benswann at comcast.net>
Cc: <alan.pritchard at rm-electrical.com>; <quattro at audifans.com>
Sent: Wednesday, April 13, 2005 3:30 AM
Subject: Re: quick question, typ 89


>
> > Yes, the M80 is also CIS E-3 and the major difference is that the 90 is
a
> > 5cyl and 80 is a 4cyl in most cases.
>
> According to a quick skim of my Bentley, as per memory, the 4 cyl (USA)
> id Motronic, not CIS.  IE, completely incompatible.
>
> > In the M80 I pulled a engine
> > management harness and control unit - there was only one control unit.
In
> > the 87.5 the fuel and ignition units were separate.  They may have
> > integrated them in later versions.
>
> Every CIS-E3 car I've cut into has two control units - one for fuel, one
> for ignition.  In fact, my 90Q came to me with an 87.5 ign. computer
> installed, that I sold the local tech to get it running again.  Fuel in
> one place, ignition buried in the right kick panel where windshield
> leaks will kill it...
>
> In short - as far as USA models go - the 4 cyl is Motronic and
> completely incompatible with the 5 cyl CIS-E3 system.
>
> As far as the ROW is concerned, well, we don't know for sure... they
> won't tell us on the news, what's happening out there....
>
> --
> Huw Powell
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/