demonspeed

iTrader: (7)

I had 2 of the same codes stored in my car. Both were PO327: Knock Sensor 1 Circuit Low Imput Bank 1 or 1 Sensor. So this means what?

How can I have 2 of the same codes? Does that mean both sensors are shot? How can I tell which one is bank 1? I can get both sensors for $30 bucks at the dealer, but I just don't feel like tearing the intake off.

Thanks!

mcflyz28

If you have to go in there you might as well replace both.

Kurt D

iTrader: (2)

I think that's the code mine threw. I think bank one is the front one. I say this because on mine the front one was a rust ball. Anyway you might as well replace both, I wouldn't want to do it twice.

demonspeed

iTrader: (7)

That's what i'll end up doing. How long did it take you guys to do the change? Is there anything I should be aware of before starting out?

Team ZR-1

Bank 1 is always the head that has piston 1
S1 is always the O2 before the Cat, thus is the upstream one and
S2 is always the O2 after the Cat, i.e, downstream

So a HO2B1S1 would be on the LS1, left head, O2 before the cat

demonspeed

iTrader: (7)

Thanks for the info

J&JsTA

There is a sensor at the back of the intake that you need to be careful with as it is easily broken if not handled with care when removing the intake

http://www.ls1howto.com/index.php?article=5

Kurt D

iTrader: (2)

Yeah, watch the oil sending unit. It's behind the intake with the vacum line for the brake booster wraped around it. I managed to break mine, thank God Autozone had one. Take your time.

minivette

You might want to change out the wiring harness while you are in there.