Post by
Q45tech »
https://forums.nicoclub.com/q45tech-u112.html
Wed Oct 08, 2008 7:16 am
Both KS are in same general place where all V6 and V8 knock sensor are located under plenum and bolted to cylinder heads.
Download FSM and study or search Q45 forum and you will find many many threads since every vehicle will need them replaced just like spark plugs eventually.
12 years is about the useful life, shorter if ever overheated or just life in hot climates.