New O2 sensor, check engine light

[Billy Mild]

I just recently had my Stainless works headers installed along with a set of C6Z cats. At the same time I had new O2 sensors installed from Rock Auto. After the engine comes up to temp the Service Engine Soon light comes on. I get code 63 for right oxygen sensor.

The brand of the O2 sensors is Standard Product. When hooked up to the scanner I noticed one side was around 750-800 counts and the right side is 400ish counts. Not sure what that means,but I also noticed when I rev the engine the counts does not change on the right side.

I purchased a new sensor just so I can get going but is there anything else I need to worry about?

[oricale]

Definately sounds like the 02 sensor. Optimal 02 sensors for the ZR1 seems to be the bosch series.

Easy ops check would swap the two 02's and see if the counts follow the 02 sensor.

[Hog]

Nothing but Delco for the O2 sensors. Avoid Bosch except when purchasing a "wide band" oxygen sensor replacements for a wideband O2 sensor.

[Hib Halverson]

Actually, there might be nothing wrong with the sensors. It just might be that side of the engine is rich.

Then the AFR is either side of stoich, narrow band sensor's resolution sucks. If one side of the engine is rich, you you won't see much change with the output always hanging around .800 mV or so.

Run the diagnostic procedure in the FSM to decide whether or not the sensor is bad.

Also, you might have a problem with sensor location. You say you're running LS7/LS9 cats so, depending on where your exhaust fabricator located the O2S for bank 2, you could have a problem there.

As for sensors, contrary to "popular" opinion, there is nothing wrong with Bosch O2Ses. In fact, Delphi may be buying sensors from Bosch. When I owned my ZR-1 I ran Denso sensors exclusively because I felt the Denso design was an improvement on the Bosch design.

And speaking of widebands, I just changed to an LC-2 and I have a while bunch of the LSU 4.2 sensors for Innovate LC-1, LM-1 and etc. If anyone is interested, PM me.

[Starman]

2-3 years ago I installed the long tube, Stainless Works headers. Looking under the car today, I see someone forgot to put cats back on it!!!!

When the headers were installed, I had a set of Bosch 15717 O2 sensors for a truck I no longer owned, still new in the box. Like the factory 13077 sensors, these are heated, but 4 wire with dedicated grounding for the signal circuit. A little crimper work later, they sported the factory 3 wire connectors and dedicated grounds to frame. Work perfectly.

Make the diagnostic checks as Hib indicated -might have a broken wire or bad connection. The harness connector for the passenger side is a bear to get to.

Personally, I would not put a Standard product on a lawn mower. Had an O2 sensor that lasted about 5K miles on a heavily modified L98, does not surprise me you may have one dead out of the box. Bosch invented O2 sensors, that is all that I have used for a very long time.

[XfireZ51]

Nothing but Delco for the O2 sensors. Avoid Bosch except when purchasing a "wide band" oxygen sensor replacements for a wideband O2 sensor.

I agree w Hog on the Delco sensors. I had been using Bosch sensors for sometime, but during my data logging I would notice the passenger side sensor in particular would send back a string of 0v readings. For just a few frames, that did nothing, but there were other times where the string of 0's was significant,
I rebuilt my harness extension more than once but no joy. Finally, I read on 3rd Gen about the Delco. Installed that on both sides. More stable and accurate readings. No signal dropout period. I re-did the VE tables using the Delco which resulted in a smoother idle and cruise.
BTW, I use a Zeitronix ZT-2 wideband system for display and data logging of WOT. Stone dead reliable for years.

[Paul Workman]

FYI, don't do what I did once and seal the office where the wires enter the O2 sensor. I thought as a preventative measure sealing it off (with RTV) couldn't hurt - you know...keep oil n water from getting in.

After my 2nd new sensor quickly failed, I learned the O2s need to sample (be exposed to) fresh air in order to work.:o:o:o

Juuust in case anyone else thought about doing that....DON'T!

[Billy Mild]

I feel like an idiot but the sensor was unplugged. I will tell you that plugging in the passenger side sensor is a pain in the butt. It is in a spot that you can't see. I just had to go by feel.

[XfireZ51]

I feel like an idiot but the sensor was unplugged. I will tell you that plugging in the passenger side sensor is a pain in the butt. It is in a spot that you can't see. I just had to go by feel.

So how long has it been like that? We are all guilty of ignoring the rule of Occam's Razor.

[Billy Mild]

So how long has it been like that? We are all guilty of ignoring the rule of Occam's Razor.
I drove it a total of 30 miles. These sensors were put on with my SW headers last week.

Sent from my Nexus 6 using ZR-1 Net Registry mobile app (http://r.tapatalk.com/byo?rid=90383)

[XfireZ51]

I drove it a total of 30 miles. These sensors were put on with my SW headers last week.

Sent from my Nexus 6 using ZR-1 Net Registry mobile app (http://r.tapatalk.com/byo?rid=90383)

So ur saying the O2 has been unplugged since the SW install.

[Billy Mild]

So ur saying the O2 has been unplugged since the SW install.
Yes sir. I plugged it in right before my dyno day last weekend. I had a professional install my headers. They missed hooking up the passenger side O2 sensor

Sent from my Nexus 6 using ZR-1 Net Registry mobile app (http://r.tapatalk.com/byo?rid=90383)

[XfireZ51]

Yes sir. I plugged it in right before my dyno day last weekend. I had a professional install my headers. They missed hooking up the passenger side O2 sensor

Sent from my Nexus 6 using ZR-1 Net Registry mobile app (http://r.tapatalk.com/byo?rid=90383)

So was the O2 plugged in for your dyno run? Not clear.

[Billy Mild]

So was the O2 plugged in for your dyno run? Not clear.

Yes it was.

[Starman]

Before we get too far down the road, what specific Delco O2 sensor is the bomb? Want to make a note for future reference. Thanks

[Billy Mild]

Service Engine Soon light came on during my drive then went out. When I got to work I plugged in my scanner. It showed the Right O2 sensor as too lean. I cleared the code and it looks like the sensor is reading about normal.

How is everyone securing their O2 extension harness after they put longtubes on?