Hey guys I'm running a 99 FMAX turbo Prelude and now I'm getting a CEL of 23= Knock Sensor.. can anybody tell me more about this.. I know that we have knock sensors... is it just that I need a new one or is there something seriously wrong with my car?? Oh BTW I have NO CAT

 

you may be detonating bad enough that the knock sensor is confused, but i doubt that. is it constant? like from the moment you turn on your car?

Rob

 

Well it's not constant on... it turns on when I'm giving it more than 30% throttle for 5-10 secs or when I have full throttle it's on after 3 secs

 

what octane fule are you running if its low put higher octane in there

 

My knock sensor isn't plugged in and I'm getting the same symptoms. Are you sure it's plugged in?

 

Well I'm NOT sure if it's plugged in.. cuz my engine is really really tight.. BUT more importantly is the fact that I have NO idea where it is... I think it's under the intake manifold... and I'm running 94 octane... (R+M)/2