16V Problems... Part 18 - Please help an idiot...

[amalventano@sc.rr.com (Allyn)]

o2 doesnt feed into timing at all, completely seperate (on cis-e).
Al

----- Original Message -----
From: "Ryan H" <rhock99@epix.net>
To: <scirocco-l@scirocco.org>
Sent: Sunday, October 20, 2002 4:18 PM
Subject: Re: 16V Problems... Part 18 - Please help an idiot...


> Ahh, the problem becomes clearer now... I'm going to play around with the
coolant temp sensor (disconnect my enrichment module) and clean the connections
to see if it helps any.  Just another quick question, though - doesn't the O2
sensor play a role in the knock circuit?  I.E. if a reading is way out of range
the box would retard timing?
> >
> > From: "BoxOParts" <bhonnold@pac-cap.com>
> > Date: 2002/10/20 Sun PM 12:29:46 EDT
> > To: "Ryan H" <rhock99@epix.net>
> > Subject: RE: 16V Problems... Part 18 - Please help an idiot...
> >
> > Why would you have vacuum advance on a 16v?
> >
> > All that vacuum line to the knock box does is tell it that the engine is
> > under load so that it can electronically adjust the timing.  However, if
> > there is a problem with the knock sensor or temp sender, then the brain
> > can't adjust correctly.
> >
> > So, yes it makes sense that you get a timing/running improvement when you
> > disconnect that line but it doesn't mean that the line is part of the
> > problem.
> >
> > Brian
> >
> > -----Original Message-----
> > From: scirocco-l-admin@scirocco.org
> > [mailto:scirocco-l-admin@scirocco.org]On Behalf Of Ryan H
> > Sent: Sunday, October 20, 2002 9:05 AM
> > To: scirocco-l@scirocco.org
> > Subject: Re: 16V Problems... Part 18 - Please help an idiot...
> >
> >
> > This makes perfect sense for the electronic advance, Brian, but why would my
> > vacuum advance be held back?
> >
> > >
> > > From: "BoxOParts" <bhonnold@pac-cap.com>
> > > Date: 2002/10/20 Sun AM 11:21:59 EDT
> > > To: "Ryan H" <rhock99@epix.net>
> > > Subject: RE: 16V Problems... Part 18 - Please help an idiot...
> > >
> > > Only a couple things throw a cis-e car into limp home mode. ie no timing
> > > advance.
> > >
> > > I would suspect a failing or corroded temp sender, check the connections.
> > > Also, check the operation of the idle switch on the throttle body to make
> > > sure that the knock computer knows when it's on or off throttle.  Lastly
> > > check the connections at the knock sensor.
> > >
> > > The system ONLY goes into limp mode if the temp circuit and/or the knock
> > > circuit provide no feedback to the knock box.
> > >
> > > Brian H
> > >
> > >
> > > -----Original Message-----
> > > From: scirocco-l-admin@scirocco.org
> > > [mailto:scirocco-l-admin@scirocco.org]On Behalf Of Ryan H
> > > Sent: Saturday, October 19, 2002 10:57 PM
> > > To: scirocco-l@scirocco.org
> > > Subject: 16V Problems... Part 18 - Please help an idiot...
> > >
> > >
> > > If you don't want to read this whole thing, please at least read my last
> > > paragraph.  I need help!
> > > As many of you may know, I've been having problems with my car going into
> > > "limp" mode, where I have no power from the timing being retarded... Well,
> > I
> > > did some experimenting tonight and pulled the vacuum line that goes to the
> > > knock box controlling vacuum advance (I know, probably a bad idea).
> > Anyway
> > > here's what I found:
> > > 1.) The car still goes into limp mode, although it's not NEARLY as bad,
> > and
> > > when it runs normal, it's MUCH faster than before, telling me the timing
> > was
> > > ALWAYS being retarded some.
> > > 2.) The car spits out alot of smoke @ WOT according to my buddy - could I
> > be
> > > running so rich that it's retarding my timing?  My Scirocco never seems to
> > > use any gas, though.  Anyway, running rich wouldn't affect vacuum advance,
> > > would it?
> > > 3.) Obviously, my electronic advance is getting a bad signal too, since it
> > > still had low power.  Could my engine really have a problem?  Everything
> > > runs normal, but why would vacuum advance be a problem?  Isn't that just
> > > vacuum from the head?  Could my oil pressure be going so high or low that
> > > the vacuum advance gets a bad signal, and also causes the electronic
> > advance
> > > to get a bad signal too?
> > > 4.) Could leaving the vacuum line from the engine open (oops, forgot about
> > > that) be causing the electronic advance to go wacky, and my problem is
> > > simply a vaccum leak (I wish)?
> > >
> > > OK, let me sum up my question... Why would BOTH my vacuum and electronic
> > > advance on the knock box be getting bad signals?  It's definitely not the
> > > knock box, since it runs much better with vacuum unplugged.  New knock
> > > sensor, too.  What parts are responsible for the car running in open vs.
> > > closed loop mode (so I can test more)?  O2 sensor, coolant temp. sensor,
> > > DPR, and ????
> > >
> > > This problem is getting annoying, especially now that I've tasted full
> > > power.
> > >
> > >
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> > >
> > >
> >
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