Struggling to change out the upstream air / fuel ratio sensor (O2 sensor) on a 2004 Legacy Outback Wagon with H4 motor. Access to the sensor apparently is not available even when using a 22mm special sensor socket or any combination of socket knuckles or open-end wrenches. We've tried removing exhaust shield and converter shield but no joy.
The only way to remove / replace the sensor *seems* to be to remove the passenger front CV axle first. Any help would be hugely appreciated as we're stymied and stuck :-(.
Thanks in advance !!
The only way to remove / replace the sensor *seems* to be to remove the passenger front CV axle first. Any help would be hugely appreciated as we're stymied and stuck :-(.
Thanks in advance !!