[s-cars] I want my MPG

[Floyd Noel]

Thanks for all the tips, I will be investigating all of these over the
next few days as I have time. I really appreciate the pointing out of
where to find how to read the codes, I had read it once before when I
was still in Iraq, but forgotten where I found it. Thanks again!

R/S
Floyd Noel
Sgt/USMC

On Dec 27, 2007 3:30 PM,  <calvinlc at earthlink.net> wrote:
> You don't need a vag-com, you can just short the two pins together as
> described on Scott Mockry's site.
>
> Someone else had said that a bad O2 sensor throws a code.  This is not
> necessarily true.  It depends on how bad it is.  The only way to tell for
> sure is to check it with an O-scope and an A/F ratio gauge.  However, the O2
> sensors are supposed to be replaced every 50k, not that anyone does that,
> but they do get lazy, i.e. takes longer to respond and close the feedback
> loop, with age.  The universal ones that you splice into the existing
> connectors can be had for about $40 if I remember right.  It takes less than
> 1/2 hour to replace.
>
> Definitely check the water temp like everyone has said, T-stat and temp
> sender are both likely suspects.
>
> I highy doubt that the duel filter has anything to do with it.  One thing I
> had happen once on a '91 200 was the fuel pressure regulator started leaking
> from the fuel side to the vacuum side, causing raw fuel to get dumped into
> the manifold.  This is an easy one to diagnose by simply pulling the vacuum
> line to the FPR and see if fuel is coming out.
>
> If you need to clean the injectors I would highly recommend removing them
> and sending them off to WitchHunter performance.  They will disassemble them
> and basically rebuild them.  They will give you pre and post flow results as
> well.  It only costs $17 an injector and is well worth it.  Can make the car
> run smootehr as well.  I had a set done on another Audi and they did a great
> job.
>
> It also might be a failing coil-pack, although you would likely notice the
> perfromance hit for this one before the mpg hit.
>
> --Calvin
>
>
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com]On Behalf Of Floyd Noel
> Sent: Thursday, December 27, 2007 10:41 AM
> To: Tom Green
> Cc: s-car-list
> Subject: Re: [s-cars] I want my MPG
>
>
> The computer hasn't said anything strange, no lights are on. I still
> need to get a VAG-COM to check for codes. The smoke is gray.
>
> R/S
> Floyd Noel
> Sgt/USMC
>
> On Dec 27, 2007, at 9:17, Tom Green <trgreen at comcast.net> wrote:
>
> > Mail call, Floyd.  Now, listen up!  Like when the Gunny holds mail
> > call on TV.  :-)
> >
> > Have you been getting a MIL (check engine light) ?  It does come on
> > when you
> > turn on the key and then go out when you start, doesn't it?  Have
> > you blinked out
> > any trouble codes or checked them with a VAG-COM ?  A bad O2 sensor
> > will give
> > codes.  Almost everything else that affects mileage will drop
> > codes.  After you read
> > them, tell us what they are.   What color is the tailpipe smoke?
> >
> > Use that procedure to read the data on the climate control head,
> > especially the
> > engine coolant temperature to compare with the instrument panel
> > gage.  If you
> > mess with the hoses and fittings on the back of the engine and the T
> > fitting that
> > holds the temp sensor, be gentle as these plastic fittings get very
> > brittle with age.
> >
> > Tom
> >
> > -----Original Message-----
> >> Date: Wed, 26 Dec 2007 20:39:31 -0800
> >> From: Floyd Noel <floyd.noel at gmail.com>
> >> Subject: [s-cars] I want my MPG
> >> To: s-car-list <s-car-list at audifans.com>
> >> Message-ID: <E09434D2-6047-4F68-BD0B-D23930DCAE0D at gmail.com>
> >> Content-Type: text/plain;    charset=US-ASCII;    format=flowed;
> >> delsp=yes
> >>
> >> Listers,
> >> My s-car has been getting horrible mileage lately (around 11.5) and I
> >> have been trying to diagnose the problem. Power seems like it has
> >> gone
> >> down as well, but my butt dyno isn't the most accurate, and it still
> >> has way more than my work Malibu. It also seems like to me that there
> >> is more smoke coming from the tailpipe than I would prefer on cold
> >> mornings, but in the daytime it is not really a problem. I just
> >> replaced the spark plugs recently, not much difference.   From the
> >> research I've done, it seems like it might be the oxygen sensor, and
> >> I'm not sure when the last time it was changed, so I figured it
> >> wouldn't hurt to change it. Are there any other things I should
> >> consider or steps I should take? I bought fuel injector cleaner as
> >> well but haven't used it yet.
> >> TIA
> >>
> >> R/S
> >> Floyd Noel
> >> Sgt/USMC
> >
>
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
>
>



-- 


Make April 15th just another day. http://www.fairtax.org
message ends-