Sorry i accidently hit enter,

How would i check voltage or connection at the sensor? Will it get signal at acc, atleast enough to check with a test light?

 

Is the ecu throwing the same code as before?

 

you really really need to torque the knock sensor to spec

 

ecu is throwing code 55.

 

Ok i torqued it down properly (15-20ftlbs) and im still getting the same code. I checked the wiring with a test light while the car was on and i didnt get a signal.

Have you guys ever seen this before?

 

LOL @ code 55
it means your in the clear buddy :thumbsup
http://www.ka24development.com/ecu_codes.html

 

In the Maxima world...knock sensor malfuction was a "ghost" code where it wouldn't actually trip a CEL if broken. Does the knock sensor code actually trip the light in 240's? If not, you have another issue.

 

I know that code 55 means your all good but it threw a code 55 even when autozone got a knock sensor error. When i leave the key at acc the check engine light stays on, even after reseting the ecu.
I checked it with a test light an im not getting any voltage.

What pin ut is the knock sensor on an s14.

 

The knock sensor doesn't work like that. Its not a resistor or anything, its sorta like a microphone and the ECU analyzes the levels of volume.
A noisy ticking timing chain can cause the ECU to throw a code for knock when its actually the timing chain.
The check engine light is SUPPOSED to be on until the engine is running.

 

The knock sensor does not throw the MIL light. Shwag is correct about the MIL light. It stays on until the engine is running. As far as why your light is on with no codes other than 55 is a whole different problem.

 

Ok guys im gunna jump it with a wire ill let you know.

 

Aren't you supposed to turn the engine on after resetting the ecu? iirc thats what i did for my o2 sensor code then it went away.

 

I don't get it, are you just saying that the CEL is on when you are in ACC? Well, its supposed to be, its the dash light self-check! Does it turn off when you start the car?

 

exactly what i thought ^

 

:rotflmao:rotflmao:rotflmao

 

The code was 55 but the autozone scanner was picking up a knock sensor code. I ended up having a short. Problem went away after i built a jumper wire and ran it in the factory harness.