help needed for a buddy(87 16v)

[sharpshooter33 at roadrunner.com (David Brown)]

Rich for most, but I had tuned the mixture to be lean when it didn't have 
the O2 because I was having problems passing emissions.
So what I did back then was unhooked the O2 and leaned the mixture.  Went 
thru the emissions with flying colors.  At the time with the O2 running it 
was not passing.
Hmmmm maybe my O2 was going out then. 8-)
Either way I was driving home from Dayton to Cincy when it took a dump on me 
and sputtered to a stop.  Pulled the O2 wire and started back up and drove 
it home.
8-)
May not be right, but I've always been a hard learner.
----- Original Message ----- 
From: "Brett Van Sprewenburg" <brett@ataxxia.com>
To: "scirocco list" <scirocco-l@scirocco.org>
Sent: Saturday, March 17, 2007 12:38 PM
Subject: Re: help needed for a buddy(87 16v)


>
> On Mar 16, 2007, at 1:17 PM, David Brown wrote:
>
>> scirocco's are so troublesome. Just sell it to me 8-)
>> Really though I had one just sputter to a stop while driving once  and 
>> wouldn't restart...turned out to be the O2 sensor.Unplugged it  and ran 
>> fine. Lean, but fine. 8-)
>>
>> Cheers
>> David
>
> Just wanted to point out that without O2 sensor input, the CIS(-E)  fuel 
> mixture system goes into a limp home mode of sorts with a better- 
> safe-then-sorry fuel mixture.  That mixture is on the rich side, not 
> lean.  Rich mixtures lead to bad fuel economy, nasty polluting  exhaust, 
> sooted up pistons and valves...etc.  Lean mixtures can lead  to a burned 
> valve or valve seat, or even a burned piston.  Factory  installed logic: 
> For Your Protection. :)
>
> ==Brett
>
>
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