[s-cars] I want my MPG

[Fred Munro]

Floyd;

When I bought the '97 it hesitated when warm whenever the throttle was
opened. Problem was a bad oxygen sensor. If you don't know how old it is,
replace it with a generic Bosch 13913 sensor - you should be able to find
one for around $30 but you'll have to splice it on to the Audi connector.

HTH

Fred Munro
'97 S6


-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com]On Behalf Of Floyd Noel
Sent: December 31, 2007 1:25 PM
To: <stott at gwi.net>
Cc: Tom Green; s-car-list
Subject: Re: [s-cars] I want my MPG


The MIL light is good- no codes, either. Next thing to check is the
temp sender. I'm starring to think it might be that, because when I
very first start up the car, there is no smoke- until it warms up a
bit. Also when its warm it hesitates quite a bit under WOT or even less.

R/S
Floyd Noel
Sgt/USMC

On Dec 28, 2007, at 8:12, "Stott Hare" <stott at gwi.net> wrote:

> Couple things to keep in mind...  if the MIL lamp doesn't prove out
> at start
> up, Floyd's car may have a burnt out bulb, or be one of those car
> where the
> bulb is missing altogether.
>
> Regarding temp senders, I believe the sender in the heater core T
> fitting is
> to tell the Climate Control what the coolant temp is, and it is the
> reading
> that can be viewed by the CC head diagnostics.
>
> However, the temp sensor that the ECU uses for determining fuel
> mixture is
> the white sensor screwed into the rear of the head or block (I
> forget which
> exactly).  Then there is the multifunction temp sender in the water
> manifold
> which drives the temp gauge in the instrument cluster.
>
> HTH,
> Stott Hare
> 95 S6A
>
> -----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 12:41 PM
> 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
>>
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