mrvedit

The O2 sensors will report their voltage through the scanner, but if you run OL, their output is not used.

lilrobo

here is a log run ,, tell me what you think

mrvedit

Your O2 voltages barely vary - only between .443 and .451 volts. I don't even know how that is possible, assuming they are connected and in the exhaust.

lilrobo

Got me, , so they are working?

mrvedit

I would say no, your O2 sensors are not working.
Even tiny changes in the AFR will cause huge changes in the narrow band sensors; mine are constantly swinging from e.g. 100mv to 800mv.

lilrobo

thanks i will investigate more

joecar

They might be open circuit.

kainedogg

iTrader: (23)

Subd for the learning experience

lilrobo

i have a guy that might have found some issues

lilrobo

i made some changes , what would be the best to post the tune or log or both ,, i want to get your guys opinion

thanks

joecar

Both.

mrvedit

It helps (at least me) if you post your scanner's .cfg file too so that we are looking at the same PIDs.

lilrobo

i adjusted my tune and loaded it and drove it i couldnt tell any difference ,, i am doing a log tonight

thanks

joecar

This is a good point.

lilrobo

i dont know what cfg file is , i will work on that here are 2 log runs i just did , i did get a engine light on the first time i cleared it , never came back on ,,
hope this is it

mrvedit

Again your O2 sensors stay at almost exactly 447mV, indicating they are not connected correctly.

lilrobo

i got a code today with a tune here it is ,, what do i need to do about the o2 sensors , they are plugged in , how do i test them

thanks

lilrobo

the code are PO134,, PO154 i have been reading about these, and most say change the sensor, mine are new i put them in when i did the motor swap , reasoning being the old sensors were different plug , i had to go to square plug to match wiring harness , could that be something in common ??? the motor is from a 06 truck and PCM is from 02 camaro i say the harness id for the 06 truck .. what do i need to do ?

thanks

LSX Power Tuning

iTrader: (4)

A 06 truck is DBW. are you running DBW? The O2's are wired different on a truck vs camaro harness. You can repin the wires for the O2 sensors to make it work or change the tune to a truck tune and they will work if thats your issue. You're going to need to get a camaro schematic and a truck schematic and see what harness you have first.

lilrobo

06 truck motor but i have DBC , the harness was order for the PCM ( 01 camero ) i have red and blue connectors

thanks