None of the cases I had was it a bad knock sesnor, the knock sensors where all fine......what I did to fix the problem was cut the shorted section out and re-solder the sensor wire backtogether making sure to keep it isolated from the shielding which lay right over it then covered it properly then I joined teh shield wire back together and re-soldered it back together and covered it apropriately then wraped it all together in electrial tap and all is fixed.....my gas milage went up right away throttle responce came back and the car is noticably more powerful than before.
Here's a good tip where to look for your short atleast on S13's, under the harness cover that is bolt on top of the fuel injectors, all 5 short to grounds I found on other car where all traced to that very spot just look for the black wire and follow its lenght and if yoru lucky you'll see a slight bulge where its shorted to ground..
__________________
|