[s-cars] Running rich,...Stromung Kitty?

[Tom Mullane]

Interesting.  Generally, Mihnea's chips have done well at emissions.
I assume those are idle test numbers?

If so, I'd be more focused on the software than the cat.  Those CO
numbers look high even for a vehicle without a cat.

I think you are on the right track with a chip swap.  Perhaps there is
someone near you who can loan you a stock ecu?

Tom

On Fri, Feb 13, 2009 at 12:45 PM, Douglas Landaeta <dlandaeta at gmail.com> wrote:
> Tom,
>
> I think its rich from my previous posts trying to pass NJ inspection...
>
> So the UrS4 at 115k didn't get through NJ emissions inspection this time.
> Here's the data:
> Requires HC below 100 and CO below 0.5
>
> 96k Dec. of 2004 HC 61 CO 0.04 pass
> 107k April of 2007 HC 81 CO 0.45 pass
> 115k Nov 2008 HC 117 CO 1.78 fail
>
> Well, I replaced the plugs, boots, O2 sensor, changed the oil, ran 2 bottles
> of 'guaranteed to pass' valve cleaner, and ran it very hard and very hot to
> no avail. The numbers are still not good.
> 116k Dec 2008 HC 103 CO 1.99 fail - a bit worse than before.
>
> I sent the RS2 (green) injectors out for refurbishment. I expect them back
> today. It won't fix the problem, but it's good insurance since they were
> used when I got them from a euro S2 (through Minhea) back in 2003.
>
> It smells a bit rich too. I was really hoping for a bad G62 temp sensor to
> be bad, but I had replaced it when I was doing all the coolant repairs and
> it reads properly through Vag-com and a warm-up cycle.
>
> Bob lent me some stock chips (haven't swapped yet) and the stock injectors
> are currently in.
>
> Doug
>
>
> On Fri, Feb 13, 2009 at 11:27 AM, Tom Mullane <tmullane at gmail.com> wrote:
>>
>> That's why I'm curious about the symptoms.  You say "running rich" but
>> I'm not sure why you think that is so.  Smell?  It sounds like you
>> don't have any sort of digital readout indicating mixture via a
>> wideband O2 signal, and you have no codes.  So why do you think it is
>> running rich?
>>
>> The cat is behind the O2 sensor.  Its presence or absence is
>> immaterial.  The only real issue it can cause is when it becomes
>> plugged and creates obstruction.
>>
>> Tom
>>
>> On Fri, Feb 13, 2009 at 12:12 PM, Douglas Landaeta <dlandaeta at gmail.com>
>> wrote:
>> > okay, kinda was looking for that answer. no codes, I checked basic
>> > settings
>> > with Vag-com. Everything is within range. The O2 adaptation was at the
>> > edge
>> > a 37 I believe, where the range is 35-37. wideband?
>> >
>> > On Fri, Feb 13, 2009 at 9:50 AM, Tom Mullane <tmullane at gmail.com> wrote:
>> >>
>> >> The catalytic converter has nothing to do with rich or lean.  Look
>> >> elsewhere.
>> >> What are the symptoms?  Codes?  Limp mode?  Are you using a wideband to
>> >> monitor?
>> >>
>> >> Tom
>> >>
>> >> Date: Thu, 12 Feb 2009 17:36:26 -0500
>> >> From: Douglas Landaeta <dlandaeta at gmail.com>
>> >> Subject: [s-cars] Running rich,...Stromung Kitty?
>> >> To: "S-Car-List at Audifans.Com" <s-car-list at audifans.com>
>> >> Message-ID:
>> >>       <29f1d8510902121436k72a6ba2bx568a2d7dcc56d874 at mail.gmail.com>
>> >> Content-Type: text/plain; charset=ISO-8859-1
>> >>
>> >> Well I can't find anything obvious as to why my UrS4 is running so
>> >> rich.
>> >> Is
>> >> it possible that my catalytic converter is fried from some great track
>> >> days
>> >> last fall?
>> >> It's a newer generation Stromung system, installed about 35k miles ago.
>> >> Full(er) RS2 goodies CRB 6 speed - where 3rd gear did most of the track
>> >> work
>> >> for me.
>> >> Already replaced O2, plugs, boots, temp sensor, oil. If so, where does
>> >> one
>> >> find the right replacement cat?
>> >>
>> >> Thanks,
>> >> Doug
>> >
>> >
>> >
>> > --
>> > http://www.hdradio.com
>> >
>
>
>
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