emissions repair questions for an 87 5ktcs

[kf21857 at comcast.net]

I once got a VW Vanagon that was borderline to pass by putting a couple of gallons of denatured alcohol in the tank.  The computer adjusted for it and it ran fine.  YMMV but it might be worth a try.
Dave
90Q20v
A6 2.7T
4000S

> Subject: Re: emissions repair questions for an 87 5ktcs
> To: Dave Yentema <yentemad at rider.edu>,quattro at audifans.com
> Message-ID: <20080503003256.E3DB6182E7603 at audifans.com>
> Content-Type: text/plain; charset="iso-8859-1"; format=flowed
> 
> Hi Dave,
>          welcome to the club.
> 
> I'm not 100% sure, but I think idle spec is 800 ? 
> 50 RPM, so you aren't that far out of spec 
> (assuming you have a manual trans).  With an auto 
> the idle spec is 720, so you'd be right on.
> 
> I'm not a guru, but I'll try and get the ball rolling:
> Hi CO indicates rich running.  Leaky injector?  Leaky cold start injector?
> Maybe add a couple of gallons of race gas to a low tank?
> 
> I'm not sure what .5 limit is.  But page 25.25 of 
> the Bentley says spec for CO is between 0.3 and 
> 1.2% volume with O2 sensor connected.  And there 
> is a CO adjustment procedure, but I've never done it, or had a need to.
> 
> Later,
> Arryn
> 
> 
> At 02:14 PM 5/2/2008, Dave Yentema wrote:
> >Well first off, just wanted to say hi to all of 
> >you, as this is my first submission on here.
> >
> >I've got an 87 5ktcs that i just went to take 
> >through inspection today, and it failed for CO. 
> >The standard is .5, and i failed with .56. The 
> >other numbers are 78 for HC (standard is 100) 
> >and 9.7 for CO2. I hav been trying to get this 
> >car inspected since december, when it failed for 
> >having a bad headlight. Since then everything has went wrong.
> >
> >I just had a 3in catback system done w/ a catco 
> >cat and summit race muffler, did a tune up a few 
> >months ago and for the most part the car runs 
> >great.  It does idle low every now and then, the 
> >inspection place documented my RPM at 727.
> >
> >The car has no codes at all.
> >
> >Any help would be awesome,
> >
> >Dave
>