on December 23, 2015, 10:07 am, in reply to "Audi A62.8 V6 1994 - Running lean on 1 bank, code 00554 #"
Idle -
CO-0.30%
**O2-3.61%
**HC- 0493ppm
3000rpm
CO-0.41%
O2-2.33%
HC-0089ppm
Looks like at least one or a combination of all three cylinders on that bank are passing o2 and fuel. Backed up by o2 sensor reading low.
If you confirm the plugs and injectors are firing with a scope, then surely it can only be a mechanical engine fault on that bank?
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Audi A62.8 V6 1994 - Running lean on 1 bank, code 00554 # - Adam Critchley December 22, 2015, 9:16 pm
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