After massive coolant leak, terrible idle, black smoke. solved!!

[Martin Pot]

Great advice!
What I did is started the car and unplugged  the Mass Airflow sensor.
The motor calmed down immediately.
Then I took the MAF of my '91 2CTQ put it on the Avant. Then I took it for a
spin, and soon after I left the driveway, I got my Audi grin back! I went to
the gas station, cruised thru town and went back home but noticed that I
have a slight reduction in boost noticeable on the gauge when I floor it,but
still going very fast!!. The car ran and idled very smooth though.
The car is chipped with a SJM, and used to be able to get a solid
(inaccurate)1.8 bar on the gauge, but only gets to 1.6 now When I got in the
driveway I left the car running and did the codes:
4431 idle stabilizer
2324 MAF sensor
2341 O2 sensor
I will try cleaning the contacts of the MAF sensor, or do you think that it
is on its way out also?
I will do the cleaning procedure of the ISV
I will get a new O2 sensor.

I am still wondering if the failing of the MAF sensor could have been caused
by the coolant vapor, since it failed  right after the massive spill.

Thanks for all the help, Martin.


> > Yea, let it heat up and take it for a little spin.  I
> > bet you're in some kind of limp mode, you should get
> > some codes for sure.  If I had to guess at what's
> > wrong, I'd look at the Mass Airflow sensor, and the
> > temp sensors.  If one of those were having trouble,
> > you'd be running rich.
> >
> > =====
> > Jim Green
> > '89 90tq 034EFI Stage II
> > http://www.geocities.com/jeg1976/car_home.html
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! SiteBuilder - Free, easy-to-use web site design software
> > http://sitebuilder.yahoo.com
>