[s-cars] Failed emissions testing

Sandy Sligh sdslig at yahoo.com
Tue Nov 11 14:52:22 EST 2003

Had the same problem with the S4 (RS2 minus ex. cam)
and ultimately tracked the problem to a leaky
catalytic converter housing on the Stromung which in
turn confused the O2 sensor into running rich. After I
replaced the center section of the Stromung, passed
with flying colors.

Check the exhaust system or the 02 sensor.

--- riff944 <riff944 at cox.net> wrote:
> This is a multi-part message in MIME format.
> --
> [ Picked text/plain from multipart/alternative ]
> Hi All-
> Took the S6 for emissions testing in RI today and
> failed!  Passed the CO portion of the test, but
> failed the HC ppm both at idle and 2500rpm.  Limits
> are 220 for both and my results were 266 and 245
> repectively.  Is the HC indicative of running rich?
> Or is this a faulty 02 sensor fault?  Is this due to
> the MTM chip?  Anyone know of a fix?
> TIA,
> Riff
> '95S6
> --
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list

Do you Yahoo!?
Protect your identity with Yahoo! Mail AddressGuard

More information about the S-car-list mailing list