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Hey guys i've not long ago bought a 4.8 gu auto for cheap. Had no exhaust system on when i bought it and now im just finishing it off. Problem is i need to know which 02 sensor plugs into where on the loom as both have the same plug. There is one plug with blue wire/red trace, black, and green. The other is green wire/yellow trace, green, and black. If someone could have a look at theirs and tell me which goes to front and which goes to back that'd be awesome. Thanks
cannot answer your question but did you buy a genuine o2 sensor.
Yep bought genuine ones
Can anyone help me with this please?
Hi mate,
From a post thread I replied to some time ago. Mine is a 2003 4.8 auto.
bank 2 (closet to firewall) connects to the connector with the green/yellow wire.
bank 1 (closet to radiator) connects to the connector with the blue/ red wire.
hope this helps.
Thanks mate much appreciated!
How did you go? I will also be replacing mine. I had a quick look and noticed a what looks like a heat shield..does this need to be removed? Is it an easy job getting the old ones out?
Hey mate i cant help you with that sorry. Mine came with extractors so they are easy as to get to. Just remember to lube the threads with anti seize.
Ahh no worries. Thanks anyway.
I have a heat sheild on my 07 which has the 4 oxy sensors and it didn't require removal to change them.