johnfin

is there such thing? does not show on schematic or scan tool.

fst100

iTrader: (5)

i believe B2S2 is the passenger side and the rear O2 sensor which is after the catalytic converter.

johnfin

show me on schematic

fst100

iTrader: (5)

not sure where you got that schematic but here's one from a while back:
https://ls1tech.com/forums/attachments/conversions-hybrids/135719d1213231183-99-02-schematics-oxygen-sensors.jpg

here's the link to the original thread:
https://ls1tech.com/forums/conversio...chematics.html

bammax

Passenger side after cat.

Bank 1 is drivers side and bank 2 is passengers side.

Sensor 1 is front (in the manifold) and handles the actual air fuel mix. Sensor 2 is rear and tells the pcm if the catalytic converter is working.

Jack up the passenger side and look at the exhaust pipe just behind the cat and you'll see the sensor.

johnfin

got it off the ls1 forum

http://www.mediafire.com/?40mfgeoe4ctti#46od4xslajn9l

bammax

For the 99 year it's page 6-1899 for O2 replacement. The manual for your year will most likely be around that page number.