Horrible running 8v

[pilotlars at yahoo.com (Lars Bruchmann)]

your 02 about an O2????  
--- David Utley <fahrvegnugen@cox.net> wrote:

> 
> > 
> > From: Spewey <spewey@comcast.net>
> > Date: 2004/08/26 Thu PM 09:47:26 EDT
> > To: Jason Peters <nefarious@drumatix.net>,  
> scirocco-l@scirocco.org
> > Subject: Re: Horrible running 8v
> > 
> > Jason Peters wrote:
> > 
> > > Hello everybody,
> > > 
> > > I'm pretty new to the 'rocco list so excuse me
> if this is an easy 
> > > question/fix.  First a little background: '83
> 'rocco 8v on CIS
> > > 
> > > I replaced the O2 sensor with a nice new one,
> connected it and fired
> > > it up.  Seemed to run fine for the first few
> minutes(maybe till the
> > > sensor warmed up) after that the idle started to
> hunt around up and
> > > down.  Backed out of the drive way and the car
> would barely go.
> > 
> > Welcome!
> > 
> > 1. Those one-wire sensors only warm up from
> exhaust heat.  Three-wire
> > sensors have a heater in 'em. Ones would perform
> worse when cold if
> > everything else is good.
> > 
> 
> Not so...  The ECM does not use the signal from the
> O2 until after warm-up.  BTW, the only reason there
> is a heater in the 02 is so that it will be a
> cleaner-burning engine, purely for emissions
> standards...  A properly tuned CIS system will run
> fine, all the time...  I think you have fuel
> pressure problems, more than likely from the warm-up
> regulator mounted on you block.  You won't know that
> until you check the control and system pressures
> both hot and cold...
> 
> My .02,
>    David
> 
> 
> ---Chrome don't get you home.---
> 
> 
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> 


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