Fw: [Tech] 16v Running Problems! (semi long)

["Ryan McCarthy" <rmccarthy777@msn.com>]

Chris, I originally responded just to you, but it was returned as
nondeliverable. So I'm forwarding it to the list hoping you might get it
this way.

> Sounds exactly like the problem I'm having with my wife's Jetta. I've
traced
> the problem back to the ECU. First, the engine is running way to rich
(black
> exhaust smoke). It does this somewhat intermittently, but much more
> regularly lately. It also produces a pretty pungent odor from the unburned
> HCs. Her car also has an electronically controlled idle air valve. The
thing
> idles all over the place from 900 down to like 400 up to like 4k. I
thought
> it was the valve, but when I tested it, it was actually getting the
signals
> from the computer. I'm not sure if this is exactly the same problem as
your
> friends, but they sound too close to be just coincedence to me. Maybe you
> could do a quick test swap just to check? Hope this helps in some way.
>
> Ryan
>
>P.S. Any luck with the digifant ECU I asked you about? Thanks!
>
> >
> > > Is the exhaust color black?
> > >
> >
> > Yep!  Why,...is this good or bad?
> >
> >
> > > > Guys and Gals,...here is a new one on me.  A buddy of mine stopped
in
> > > today
> > > > for so help with his speedo.  I got the speedo working and we took
off
> > for
> > > > the local movie rental in his 87 16v Rocco.  Car ran pretty well for
> > about
> > > 2
> > > > minutes of the trip.  (lah, lah , lah,...on with the story)
> > Anyhow,....he
> > > > had just add a bottle of "Chevron Techron" cleaner to his 3/4 full
gas
> > > tank.
> > > > Drove about 25 miles to my house.....no problems.   We are cruising
> down
> > > the
> > > > highway,...he goes for 5th gear and as soon as the clutch is pressed
> > > > in....Dead!   Car dies and we just coast.   Sitting in a parking
> > > > lot,...nothing seems to be overheating,...(though the intake
manifold
> > did
> > > > seem a bit warm?)  the car will idle and 800rpm,...dive to 100
> > rpm....sit
> > > > there for a moment,...go to 1200,...then to 2500,...back down to
1000,
> > > etc.
> > > > So we jump back in it and do a total of maybe 8 miles of driving.
> He's
> > > to
> > > > the point he is holding the gas pedal on the floor,....rpms are
> showing
> > > 200
> > > > (maybe),...and then suddenly it will surge to take off like nothing
is
> > > > wrong.....then back down to dying stage.  We finally gave up a few
> > blocks
> > > > short of the house and walked home to get my car.  But here is the
> > > > kicker......He cranks it up,....keeps stomping the gas to keep it
> > > > running,..it backfires a little into the airbox,....so he shuts it
> down
> > > > again.  I notice out the tail pipe there is smoke coming from
> > it....(this
> > > > car doesn't burn oil,.......at least it never has before......the
> motor
> > is
> > > > completely rebuilt)  So the car is not running but there is smoke
> still
> > > > coming from the exhaust.
> > > >     It's pouring rain here now,...so we figure tomorrow will be wet
> and
> > > > miserable,....but I could use some insight.  At first we thought the
> > fuel
> > > > injector cleaner just wasn't burning right in the motor.....but he
is
> > > > convinced that it is mechanical damage.  (motor)     I'm kinda
leaning
> > > > toward a plugged cat. converter or muffler.   I've never seen such a
> > weird
> > > > deal.
> > > > All and any help is really appreciated.
> > > > Thanks,
> > > > Chris
> > > >
> > > >
> > > > --
> > > > Email LIST problems to: scirocco-l-probs@scirocco.org.
> > > > To unsubscibe send "unsubscribe scirocco-l" in the message to
> > > majordomo@scirocco.org
> > > >
> > >
> > >
> > >
> >
>
>



--
Email LIST problems to: scirocco-l-probs@scirocco.org.
To unsubscibe send "unsubscribe scirocco-l" in the message to majordomo@scirocco.org