Oxygen sensor replacement?

[1995GalantLS]

Hey guys
Just a quick question about that O2 Sensor. Is is worth replacing the second sensor? I could only find one (I know there is a second one), and the one that I could find just past the flex pipe. I see checker (partsamerica.com) has Bosch and another brand - any difference in quality?
Hopefully this will help in the gas mileage



THanks!
DARN BREWERS are getting SMOKED!!!! :x

[GalantGuy96]

yes, replace

[peanotation]

well you have two sensors. one is pre-cat, just in front of the firewall with the wire running up to the harness by the injectors. the second o2 sensor is post-cat just before your resonator.

[Mindless]

I have an extra 02 sensor..BNIB.....lmk if you want it.

[brandon]

Only replace the 1st O2 (downpipe).

[bronxbombr]

I have O2's for sale brand new if needed.

[seth98esT]

1st 02 is for your ECU, 2nd is for Emissinos crap, your car will run the same w/o the second. Minus a CEL for it maybe. Just get a simulator or do the Vfaq on getting rid of it.

[jhunter]

Old I know. I didn't need to replace my second o2 sensor, and now that I have I just waisted 70 bucks? will the second o2 sensor work as the first o2 sensor? damnit... lol.