[V8] Failed Emissions

[Kent McLean]

S_Matus wrote:
> 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?  

http://www.audifans.com/twiki/bin/view/Audi/EmissionsTestingO2failure
http://www.audifans.com/twiki/bin/view/Audi/EmissionsTestTips

-- 
Kent McLean
'91 200 TQA #1, for sale
'91 200 TQA #2, no name yet
'94 100 S Avant, "Moody"
'89 200 TQ, "Bad Puppy", up in smoke