O2 Sensor grounding

[toddbroussardco]

I think I have a grounding problem with the O2 sensor..I have a one wire setup currently..Who sells a setup that has a seperate wire for grounding???Thanks,Todd

 

[TurboDave]

Why do you assume a grounding problem?
The one wire setups get their ground through the threads in the bung to the sensor shell.

 

[87NAT]

Todd, what did u find? Is the sensor getting a good ground?


Turbodave, his car stumbles and sputters upon entering closed loop. It runs fine in open loop. Coolant sensor checks out. It must be his o2 sensor telling the ecm to dump extra fuel. His headers are powercoated and we are just thinking that he may not be making a good ground thru the threads.

 

[Rodney87GN]

There is also a tan O2 ground wire from the back of the passenger side head to pin D6 of the ECM.

Don't know if it can cause the problem but might be worth checking out...those grounds do weird things. I do know if that ground is bad your O2 volts will stay at .398-.402 volts.

 

[toddbroussardco]

Have not had time this weekend to check out the O2..I will probably look into it this evening..