I have a problem with my HO2S on bank 2 sensor 1 where it shows 10mv all the time. I unplugged the sensor and plugged another sensor in anad it showed 450mv. As soon as I touched the sensor to the exhaust it dropped back down to 10mv. It seems like a bad ground but I'm not sure. What would cause this? Any help would be appreciated. Thanks.

 

Also, the problem that I am having with it is that when driving after it warms up the car starts to bog down under load when hitting the gas. If you take your foot off the gas and hit it again some times it is ok but will do it on and off the whole time. I did have a bad o2 sim on that side and when I replaced it I stopped getting a code on that sensor but am still having the drivability problem. Any thoughts?

 

I would expect you to have issues with the way the car runs until you get this O2 sensor problem fixed.

You said you swapped sensors from one side to the other and the same side still read 10mv? If so, sounds like a wiring issue or PCM issue. My buddy had a bad PCM that no matter what would give 450mv for the one side. Eliminated the issue being the wiring and all that was left was to replace the PCM. He did that and the problem went away.

So, first check wiring closely then maybe swap PCMs with a bud and see what that does.

I see you have Hooker long tubes as well... check your extensions closely!