Hey guys

Can someone pleeeeease help.
1990 Peugeot 205Gti, Auto. Fuel Injected .1.9L, (Japanese Import(I
Think). (The most frustrating 205gti in the World)
:?
When you start it up, it runs like complete crap. Actually this seems
to be ok now.  But to the other problems,  the Dirty Black smoke it
blows all the time. When idling smoke not so obvious but when
following behind the car you can see it quite obvious. Not BELCHING it
out or nothing, just looks like it’s running so rich. Ok. It is
Belching it out.

Drinks fuel like it does not even exist. $20, goes no where.

Blows black smoke continuously.

Here is what I know about the car.

-When bought, it had no transmission in it as it was blown up.
-Someone has taken the catalatic converter off it.

Does the ECU monitor the catalatic converter, could this be the
problem, that it has no signal to monitor from cat anymore?
Why, does it run so rich all the time?
Have checked Airflometer, ECU, TEMP Sensor, ThrottlePosition Switch.
You name it, i’ve done it. And not to mention just about replaced all
these parts as well.
Pretty sure it’s an electrical problem, not engine. Engine
Compressions are good. What does that black box (RH Side by firewall
under bonnet)
do. Obviously something to do with the Cat. Hmmmm. You can unplug it
and it still makes no difference. Is it the Breather that could be
blocked.
Aaaaahhhhhhhh. What is it. This has beeen going on for months.

Any help appreciated.

Thank You so much.

Tezarm

P.S. There is a 2 pin plug under bonnet on left handside of engine.
Looks like a Injector Plug. There is also a single WHITE Wire in a
black sleeving going no where as the two pin plug is aswell. Anyone no
what these are for as there doesn’t seem to be anything to hook up to.
Anyone got any wiring diagrams or something.