01 bora O2 sensor

[revhead1016]

Hi Guys, Just wondering, how many pins does the O2 sensor for V6 bora have? Some told me 4 some say 3 and 2.

[Peter Jones]

Which one? There are 4 sensors in total. The rear most ones have three pins, not sure about the front ones, I haven't had to pull those out.

[revhead1016]

the scan show rear, which is the back of the cat.

[Jmac]

What is the scan showing you mate internal resistance or is it in fact doing it s job and reading an exhaust leak with too much O2 sucking back into the system, scanning is good but because it shows a sensor doesnt mean it is the item at fault, seen it all too often , best oine is the front probe the minute it says 02 sensor front people jump to change it. Why??? what if a coolant temp sensor has flooded the thing or what if there is a vac pipe split the o2 sensor will be off the charts. Check your o2 sensor activity by giving the engine false air and false fuel then you will know
My 2c
Jmac