LS6427

iTrader: (2)

How hard is it to completely replace just the passengers side 02 sensor wire.....the entire wire from sensor to PCM.....?

If I put brand new 02 sensors in the passengers side...it does nothing....so the wire must be the problem.....right..? I removed both sensors today, passengers side sensor was BLACK, the drivers side is clean like new. I put two new sensors in and after maybe 15-20 minutes of driving the SES light comes back on and tells me slow-response and circuit issues on the passengers side. Its the 3rd brand new sensor in 6 months....so Im thinking wire problem.

I had my new engine installed last year and that's when it started.....so I think maybe they let the 02 sensor wire somewhere along the way touch something hot or its pinched....

So....how hard is it to just run a complete new wire for that side.....?

Thanks....

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joecar

Unraveling the loom can be tedious (need a seam ripper to cut the tape inside the loom)...

you can temporarily run a wire outside the loom.

You will need some PCM connector terminal pins and possibly some NBO2 connector terminal pins (you will need a pick to remove pins from the NBO2 Metri-Pak connector).

LS6427

iTrader: (2)

Thanks.....

It turned out to be 3 cracked spark plug wires on the passengers side. Changed them out and its back to normal........

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joecar

Cool

( spark plugs are easier to replace than repairing wiring inside the loom )