[s-cars] Cat light on the dashboard is on and the engine doesn't run prope rly

[Ingo D. Rautenberg]

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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