Saab: Exhaust smell

On Sat, 17 Jan 2004 02:49:05 GMT, in alt.autos.saab you wrote:
 

As a personal opinion, backed by nothing other than feelings, they're
feeding you a line unless they can back it up.
 

Rotten eggs is hydrogen sulfide. Produced by the catalytic converter.
 

Either the converter is bad, or fuel is getting into it (I think that
this can do this) and you possibly have a bad cat converter because of
it (they're not designed to have a fuel flow through them, however
inadvertently). Since this *might* be a result of very rich fuel
flow, I'd wonder if the mileage is good or bad, and if that might or
might not be a source.

this is speculation, though.

Harvey

 

In article <Bo1Ob.82779$srv.hcvlny.cv.net>, sabre36
@optonline.net spouted forth into alt.autos.saab... 

Lots of short journeys, and no real highway blasts can cause the "Egg"
smell with a Cat.

Best thing for you, you wife, and the Cat, would be to go for a nice
long fast country road blast.

Give it a "Swedish tuneup". If the smell persists after that, then it
will be time to consider the problems of the CAT further down the line.
If the car has been overfueling, that cause damage to the CAT. But a
higher than needed Octane fuel shouldn't do too much damage. Modern
electronics in engine management should take that into account and deal
with it by adjusting the timing and fueling to compensate.

I think the dealer is feeding you a line, although some Low Sulphur
fuels may help.
--
Carl Robson
(The poster formerly known as Skodapilot)
http://www.bouncing-czechs.com

"Jeff Sloane" <net> wrote in message news:<Bo1Ob.82779$srv.hcvlny.cv.net>... 


Hello,

www.thesaabsite.com has a FAQ page and one of the questions refers to
"a rotten egg smell from the exhaust". It attributes this to the use
of fuel that contains methanol which causes a sulphur smell from the
exhaust.
Their suggested remedy is to change the place where you purchase your
fuel.

I don't know if this is the case with your car as you have done 15,000
miles with the same symptom.

T.L.