Oxygen Sensor - ZR-1 Net Registry Forums

-=Jeff=- · 07-01-2020

Ok, I need to replace my o2 sensors.. does brand matter or are they all made in the same Chinese factory?

Sent from my iPhone using ZR-1 Net Registry

Young1 · 07-01-2020

In my opinion brand matters. Bosch 13077 and all my problems went away. RockAuto.com. $30.99

indy91zr1 · 07-01-2020

I replaced with denso 2343094 . Haven't had a problem at all so far.

Karl · 07-02-2020

NGK 21003 purchased of eBay.

XfireZ51 · 07-02-2020

I used to use Bosch O2 sensors, but would regularly see the sensor drop signal in my datalogs. I could see strings of 0mv at times. Switched to AC Delcos and have not ever experienced that again. This was not just one sensor, but several, and at different times.

32valvZ · 07-02-2020

Quote:

Originally Posted by indy91zr1

I replaced with denso 2343094 . Haven't had a problem at all so far.

I have these also... no problems... I put them on when I added headers.

-=Jeff=- · 07-04-2020

Bought a pair of Bosch, arrived today and installed.. need to drive a bit more and get the scanner on it to see how that are working

XfireZ51 · 07-04-2020

Just to be clear, you will not notice the issue I describe w Bosch O2s as u drive. It is not something that overtly causes a drivability issue. But it is something you can see as you are datalogging. The O2 signal would drop to 0mv on one side or the other. So the ECM would drop out of LEARN and go open loop at times.
I discussed w some tuning gurus, and was recommended to use AC instead. Have not experienced the O2 signal drop since. And there was a difference in the resulting VE map.

07-01-2020	#1
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,156	Oxygen Sensor Ok, I need to replace my o2 sensors.. does brand matter or are they all made in the same Chinese factory? Sent from my iPhone using ZR-1 Net Registry __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978

07-01-2020	#2
Young1 Join Date: Sep 2016 Location: Ocala, FL Posts: 895	Re: Oxygen Sensor In my opinion brand matters. Bosch 13077 and all my problems went away. RockAuto.com. $30.99 __________________ Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much.

07-01-2020	#3
indy91zr1 Join Date: Jun 2018 Location: fishers,indiana Posts: 76	Re: Oxygen Sensor I replaced with denso 2343094 . Haven't had a problem at all so far. Last edited by indy91zr1; 07-01-2020 at 10:32 PM.

07-02-2020	#4
Karl Join Date: May 2013 Location: Chicago Posts: 982	Re: Oxygen Sensor NGK 21003 purchased of eBay.

07-02-2020	#5
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,683	Re: Oxygen Sensor I used to use Bosch O2 sensors, but would regularly see the sensor drop signal in my datalogs. I could see strings of 0mv at times. Switched to AC Delcos and have not ever experienced that again. This was not just one sensor, but several, and at different times.

07-04-2020	#7
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,156	Re: Oxygen Sensor Bought a pair of Bosch, arrived today and installed.. need to drive a bit more and get the scanner on it to see how that are working __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978

07-04-2020	#8
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,683	Re: Oxygen Sensor Just to be clear, you will not notice the issue I describe w Bosch O2s as u drive. It is not something that overtly causes a drivability issue. But it is something you can see as you are datalogging. The O2 signal would drop to 0mv on one side or the other. So the ECM would drop out of LEARN and go open loop at times. I discussed w some tuning gurus, and was recommended to use AC instead. Have not experienced the O2 signal drop since. And there was a difference in the resulting VE map.