DarkhorSe_SS

iTrader: (15)

A while back I did my longtubes and a buddy deleted the codes and all was good. Now maybe 6-7 months ago, I swapped intakes and put the ls6 on. No codes were on until the 2nd following day I drove to work in the rain. Well the next day it popped on and Az mentioned it showed the knock sensor code and o2 sensor (bank 1 sensor 2)

I finally swapped the new sensors and harness last week and again for 2 days no code but it brought up the same readings at Az.

Shouldn't the o2 sensor be deleted since a buddy deleted them from the header install? Would this trigger the ks code even if I just replaced them?

Any ideas?

teke184

iTrader: (5)

def check the tune....not sure why the rear sensors would trip a light if they were "deleted"

issue with the ks could be more than just the actual sensor. possibly wiring somewhere.

Frost

iTrader: (45)

The knock sensor code has nothing whatsoever to do with the rear O2 code...

Sounds like he didn't 'delete' them either.

DarkhorSe_SS

iTrader: (15)

well why would the ks code pop on the scanner??

I don't want to take it off again and double check the wire harness only.. I put sealant around the rubber boot to prevent water from sneaking in when I drive in the rain.

Frost

iTrader: (45)

because there is a problem with the knock sensor (or KS circuit)... that's what it is there for

Frost

iTrader: (45)

Oh yeah,

That code is one of the few that actually cost you HP. When it is active, you LOSE 4 degrees of timing whenever you get into PE (ANY heavy throttle). The PCM does this to protect the stock motor in the event of KS failure.