ErikTande
Supporting Member
- 1,508
- 569
- Dec 17, 2012
-
Centennial,
Colorado
Which o2 sensor is responsible for keeping track of the air fuel ratio while driving? Front, rear or both?
I failed emissions with really high CO GPM, which means I was running very rich.
Car is bone stock and passed emissions 2 years and only 1000 miles ago (car sat most of the 2 years).
I did drop the entire exhaust recently, including removing and re-installing the rear O2 sensor. Maybe I damaged it.
I'm going to:
Boost leak test
sea foam the shit out of it
replace o2 sensors (should I just do both to be sure?)
add 1 gallon of e-85 to a full tank
if that doesn't work,
add an air pump to pump clean air into the exhaust
(lots of cars do this from factory)
I failed emissions with really high CO GPM, which means I was running very rich.
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Car is bone stock and passed emissions 2 years and only 1000 miles ago (car sat most of the 2 years).
I did drop the entire exhaust recently, including removing and re-installing the rear O2 sensor. Maybe I damaged it.
I'm going to:
Boost leak test
sea foam the shit out of it
replace o2 sensors (should I just do both to be sure?)
add 1 gallon of e-85 to a full tank
if that doesn't work,
add an air pump to pump clean air into the exhaust
(lots of cars do this from factory)