Peter,

It was just a few ppm less than the limit in NOX. So, I was thinking a stuck EGR valve. Maybe I should just check the line first.
I always use premium gas. The car had 70,000 miles on it last November and started horribly despite a recent tune-up. Mark Langston in Denver adjusted the airflow plate when it was in for a roadside waterpump, radiator, t-stat housing, and a/c charging.

I've been lazy on diagnosis- but hey I put the 500E euro lights in the car and can see at night!

Is there any special diagnosis skills beyond standard KE needed for a california emissified car? I think you mentioned code-reading was easier??

Michael

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Michael McGuire
83 300d
01 vw A4 TDI
66 Chevy Corsa
68 GMC V6 w/oD
86 300E