KNOCK SENSOR fault code , what can it bee need help asaaaap please

[Chadbugden]

I have a 94 r33 gtst type m just got it dont know anything about it and i looked up how to run the fault codes, the car is loosing boost and power after 5grand dont know what to do ,read the fault codes and it cAme up 34 knock sensor and i thought it was because the intake had come off previously but we put it back on and reset the code and this still comes up i am burning 91 octane what else could this be and how do i check it be descriptive thankssss!!!

[Sri-LanKING]

maybe like this I'm not sure...

Error Code 34 - Knock Sensor

[Chadbugden]

I know what it is i need to know what could be triggering the knock sensor and causing my power loss

[Voodoo_ChildR32]

What's your plugs gapped at? If 1.1 you need to regap to 0.8. Have you tested coil packs as well? If not start there and work your way up till u find it.
Oh yea, do some reading. These cars are not for noobs. Try googling the issues and you should find tons of info.
Knock sensors are essentially microphones, any type of detonation will set them off. Spark, fuel, and air are the only things to worry about, make sure all three are good.


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[Chadbugden]

How do i check the coil pack where are they located

[Voodoo_ChildR32]

Coil packs are between the valve covers, just remove the center cover and they are underneath. Most cases you use a multi meter to test resistance in the coil. You will need to remove them to test. I forget which pins, there are three, you are basically looking for less than 0.9 ohms. Any higher and the coil is dying. It is also a good opportunity to check your plugs as well. Also take a look at the wiring harness that connects the coils, I have had issues there before. Check the tech sections on the forum here, there are some good "how to's" for figuring out most of the issue you have.


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[Chadbugden]

Think it could be the 91 supreme gas thats in her do these cars need a higher octane to run peak?

[Voodoo_ChildR32]

I've run with 91 and 94 and notice no difference except in my wallet. I've even had to run 89 when primo was sold out and been fine. Unless you're leaning out at higher boost, I wouldn't worry too much about fuel.


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[DougTaylor]

My car was tuned for the high octane fuel in Japan when I got it - ran like s*&t. Had to be retuned for our octane. Could that cause the knock sensor to fault?

[Chadbugden]

Went and put "91" octane gas same as i had and wapped the lucas octane boost to her and she back runs like a top, halifax vs newfoundland gas fuckin crap!!