Oh No!!!!!! Code 34...Knock sensors

[Meaux]

Well I got my FSM downloaded and ran the diagnostic 2 this morning, and I got the dreaded (for me anyway) code 34...I had a feeling it wasn't going to be as easy as a temp sensor on top of the motor.

Anyway, it looks like I'm gonna have to do it myself...any gotcha's?

Best source for parts? I assuming I'm gonna need gaskets for the upper intake collector, does the bottom intake need to come off too?

Of course I plan on doin both K s's.

Dangit......at least I didn't get 4 different codes.

Those of you that have done this job, tell me your stories......:-)

[Jeff Williams]

I had Byron at T3 replace mine, and he replaced the harness too. It looked real bad. Car runs awesome, now.

[maxnix]

www,everythinginfiniti.com for parts and free shipping up until two hours ago.

[daegrigg]

what were your symptoms for bad KS?

[Meaux]

The symptom that got me to looking was sorry performance from a dead stop.

While under the hood I could hear a slight knocking, and tapping on the head didn't change anything.

Once I got and read the FSM Self Diagnostic, I recieved the #34 Knock Sensor code. Also, when the Knock Sensers go down, the computer "retards" ignition...If I'm wrong, someone please correct me.

This is the second time I have found out, ya cain't fix these dang cars without the dang book!!! The first time was my 89 Maxima...now with 208K miles...still goin strong.

I have to work on my own cars, bieng in Alabamastan.....:-)

[maxnix]

I have to work on my own cars, bieng in Alabamastan.....:-)

Unless you drive to T-3. Still good to know what is going on.

[John Dixon]

You can always bypass them with a 1MOhm resistor in the short term.Obviously only if you're sure about fuel quality etc.

[DAEDALUS]

Do you find that to work? My KS ohm fine, but it still threw a code in the ECU. I think the ECU monitors feedback from the KS to make sure they're responsive.

[John Dixon]

It works ok on a 300zx, no reason it shouldn't on the Q? Not so sure the ECU's that clever to be honest. Could just be the usual nissan dodgy wiring / connector corrosion?Guess the best think is to try it then see if it clears the code.

[DAEDALUS]

zerothread?id=59872

I measured them through the harness (clean). Both were within 5k. Code came back repeatedly after clearing/starting the engine. On disassembly I found the sensors to be cracked right where the 2 molded halves are joined.