CO mixture adjustement, urgent

[Huw Powell]

> I think at this point we definitely need to examine/adjust the CO mixture to
> get this car on the road, we have a multimeter capable of measuring 0-10mA
> and I know on my 1991 80Q it should sit @ 0ma but what about this 88 90Q?

yes, it's the same, it should oscillate steadily up and down around 0 mA
(when warm).

> Furthermore, we can get some fitting spade connectors to measure the
> amperage out of the DPR but after reading huw's website we're a bit confused
> on which vacuum lines to block off and I guess we're just looking for a
> detailed description on how to adjust the CO mixture on a 1988 Audi 90Q

I don't do anything special, just warm up the engine and do the
measuring.  This is probably wrong though, there's bound to be
*something* silly you are supposed to do.  The "all makes, all models"
computer next door instructs you to put a 10A fuse in the fuel pump
relay... ?!

Not too sure what the Bentley says, I should look it up sometime.

That check engine light might indicate that the ignition has gone to
full retard - but that would require knocking, a bit odd on an engine
that is running plug-soaking rich, right?  maybe it is lean sometimes,
too?  Or maybe the knock sensor os bad.  Or the ignition computer...
could be damaged by water leaking in around the windsheild.

Maybe the air plate is sticking - up a bit - then at idle there would be
too much fuel, but at higher rpms, if you can get there, not enough?

--
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/