The CO reading of 1.10 is saying that your O2 sensor is not working. The
High HC is slightly related or you have a miss fire. The O2 sensor should
be regulating the Co at about .5-.6. If the Cat is working, it should be
further reduced to almost "0". Yes, these numbers indicate a Cat. That
would show up on a dyno test as an NOx failure.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
wognacious
Sent: Saturday, March 31, 2007 11:07 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Failed CA Smog

Just 2 years ago this van passed with flying colors this time no go.
Passed the 15 mph failed the 25 mph HC and CO
HC max is 103 I measured 190
CO max is 1.10 I measured 1.12
the only thing I have noticed is that my throttle position switch has been
acting up recently, but that is at low rpms. any thoughts or suggestions
will be greatly appreciated. I have a new TPS and will install today also
I didn't do a plug or oil change prior to the test, would that matter or
help?
TIA,
paul rogers
85 westy