[V8] Failed Emissions

S_Matus scott_matus at yahoo.com
Fri May 18 13:24:47 EDT 2007

The 91 failed the emissions test this morning.

The HC  and CO were out of spec (According to the state of Colorado).

What diagnosis procedure should I follow to get it back in line?

HC was 6.4 g/ml and 
CO was 179.2 g/ml

A year ago I replaced the O2 sensor.  Could it be a bad ground on the O2?.  Could this be the Head temp sensor?  

Any help is appreciated guys.  


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