96 gsr motor running obd1. motor just went in and at first only threw code 41 (o2 sensor) cuz i don't have exhaust hooked up yet and don't have an o2. i dunno when exactly it started throwing 23 but i just know it wasn't happening when it first fired up. i think it starts throwing knock sensor after its warmed up.

anyways if anyonme could give me some things to check that would be great, i don't know how to trouble shoot knock sensors.

thanks

 

check to see if its pluged in or if the connector is damaged

 

it is and no damage...