420A O2 sensor(s) 1 or 2?

[Ryan95avenger]

Does anybody know if a 95 Eclipse/Avenger 420a is supposed to have 2 O2 sensors or do they only have one?

Thanks

 

[BLACK'98DSM]

A 95 Eclipse 420a has two 02 sensors. Upstream is on the exhaust manifold and downstream is on the midpipe after the cat and passes through the floor with a rubber grommet underneath the center console. I would assume the Avenger is the same way.

 

[Ryan95avenger]

Well my 95 avenger doesn't have a downstream anywhere that I can find I found a rubber boot under driver's seat, no bung on exhaust between cat and muffler I did however find a plug in center console next to shifter assembly which is in the picture I posted after removing the driver's seat and center console, of this is for the O2 sensor that's great if not I need to figure out where the O2 sensor ties into the ECU so I can run a sensor to get rid of the check engine light code p0139 (O2 sensor 2 bank 1 slow response) I recently converted my avenger to a manual and have a ECU out of a 95 talon which has 2 o2 sensors

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[Ssj3_songohan]

my 95' 420a only has one upstream o2 sensor, realized this after getting a new catback exhaust and was wondering why there was a threaded hole on the new one and not the old