1997 P38 GEMS

Just replaced one of the post cat o2 sensors as it was outputing 1.020 volts (as if it wasn't connected at all) with no change at all.

Looked at the other three and I see this:

bank 1 sens 1: fluctuates as low as 0.02 up to 0.980
bank 1 sens 2: stays consistently at 0.900 and 0.960

bank 2 sens 1: stays consistently between 0.900 and 0.960
bank 2 sens 2: stays consistently between 0.900 and 0.960 (after replacement)


Needless to say my car is running rich as all hell and the long term fuel trims are both -17.2.

I'm thinking bank 1 sens 1 is out of whack as it is the one that is the outlier, [B]can anyone confirm?[B]

Much appreciated