FW: [s-cars] Cat light on the dashboard is on and the engine does n't run prope rly

[Frederic L'Huillier]

Thanks for the usefulle info.
I will go for the faulty sensor if you don't mind !!!
During the travel to Lyon, I could not go over 260 km/h for some unknow
reasons.
I will keep you updated.

Regards,
Frederic


-----Original Message-----
From: Ingo D. Rautenberg [mailto:ingo at waratap.com]
Sent: Monday, May 13, 2002 7:19 PM
To: Frederic L'Huillier; s-car-list at audifans.com
Subject: Re: [s-cars] Cat light on the dashboard is on and the engine
doesn't run prope rly


Frederic,

That does not sound good at all.  Cat light only comes on when the cats are
overheating, presumably from an overly lean mixture.  If you're lucky, only
a faulty sensor is to blame, but I believe that if an oxygen sensor goes bad
you would be more apt to have an overly rich mixture.  Check your catalysts.
They may well be plugged up --worst case is you got those catalysts so hot
they melted.  In either of these instances they would need to be replaced.

A rather pricey proposition.  :-(

-Ingo
'91 200q20v...Slightly modified
'83 Urquattro
('90 v8q RIP)
http://hometown.aol.com/quattringo/index.html



----- Original Message -----
From: "Frederic L'Huillier" <flhuillier at siebel.com>
To: <s-car-list at audifans.com>
Sent: Monday, May 13, 2002 12:57 PM
Subject: [s-cars] Cat light on the dashboard is on and the engine doesn't
run prope rly


> Hi,
>
> Another high speed travel last thursday night (Paris Lyon in 2 hours: Avg
> speed 120 mph). Unfortunately the Cat light on the dashboard was On. While
> travelling in Switzerland the following morning, the engine lost most of
his
> power and stop by itself. If anybody has an idea of what happened, I will
> greatly appreciate. I am thinking of a borken sensor somewhere (lambda for
> example)
>
> Regards,
> Frederic.
>



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