Ok, so here's the deal... I have a 1997 integra rs... and blew a whole in cylinder #1 about a few months ago. So i picked up a 1998 gsr motor and dropped it in my car a month after blowing my last one. After installing my motor... i noticed that i have 3 check engine lights that remain on. I have code 23,41,65. I checked the wiring on my o2 sensors and my knock sensors... and they are in their corresponding spots. So i reseted my ecu and unplugged my battery... hook everything back on... and i turn the key to the on switch without turning "on" the car. So the first things that pop back up are my o2 sensors... but my knock sensor is cleared... but as soon as i turn my car on... i drive it down the street at 25 mph and then the knock sensor light comes back on... i know the motor didn't have a knock code before.. cause the owner of the gsr was my cousin.... so yea... if anyone could help me please inform me!!!

 

what gas are you running? High octane?

 

well when i put the motor in... i had half a tank of 87 octane... but i used all the gas and then started filling up with 91 octane gas

 

can anyone help? at this time of night?

 

what ecu are you using and what timing setting

 

well i am running a obd2a p72 ecu... and the time... i don't know i had a shop do my timing...

 

check your timing, it may be off, also you may have gotten some bad gas.

 

What code would my timing trip? My o2 sensors? or my knock sensor?

 

potentially both if its not set correctly

 

No, a code indicating your knock sensor isnt actually indicating knock, its only telling you 2 things. 1. Faulty knock sensor, or 2. Bad wiring.

 

ooo phew thats a relief... knowing that i don't have a knock in my motor.... so lets try to crack down on the o2 sensors? would that be faulty wiring or faulty sensors??? and if so does anyone have any idea how they fixed that problem without replacing... trying to save money... if i have to replace.. well then... what other choice do i have

 

u need a new knock sensor

 

alright ill check the wiring first then ill replace the knock sensor... so anyone have any idea about the o2 sensors??

 

any help would be great!!

 

anyone have any other helpful ideas for my oxygen sensors?

 

anyone have any ideas?? still searching and looking for other ideas

 

replace o2 sensor. Buy 2 brand new NTK O2 sensor from Summit Racing. Good price.

 

i guess that would always work