wierd O2 numbers

[DCVING 6]

Kinda cornfused here.

The car had some old 110 in the tank, like less than a 1/4 tank. I filled it up with 93, went home and changed the O2 sensor. The one I took out, I have never seen before. I'll post a picture and see if anyone recognizes it.
I put a new GM single purple wire O2 in and new plugs (CR43TS) and the car was running great. O2's during acceleration looked good. While cruising, the O2's jump around like normal, but the cross counts are all messed up. During a cycle, the numbers change 9-11 times, but they won't go above 25.

Bad O2? Bad scanmaster? Maybe the tiny bit of lead left in the tank fouled the O2 already. FWIW, the car hasn't thrown a code yet.

 

[tom j]

was the one you pulled out a single wire and also check your grounds on the rear of the head,

 

[DCVING 6]

was the one you pulled out a single wire and also check your grounds on the rear of the head,

Hey Tom, I sent you a PM. I didn't realize there were other GN owners in New Lenox that I didn't know about.

The one I pulled out was a single wire, maybe it was heated? I will check the grounds.

 

[DCVING 6]

Ttt

 

[tom j]

any luck yet

 

[DCVING 6]

No, going to pick up a new O2 tomorrow and see what it does. Need to find a 93 chip for it, can't do much with 26* and 93 octane.

BTW I drove past the other night, but it was pretty late. Took me longer than expected to get done what I needed to do.