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Knock Sensor

Discussion in 'ECU's, Electronics, and Tuning' started by skylineboy, Oct 27, 2003.

  1. skylineboy

    skylineboy Junior Member

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    How do you install negative for the knock sensor? Or it doesn't need one.
     
  2. hatcher

    hatcher Junior Member

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    if u are using p28, u dont need knock sensor.
     
  3. skylineboy

    skylineboy Junior Member

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    I'm running a p72 ECU. I got the knock sensor hooked up but CEL still comes on a couple minutes after driving it. Just wondering if knock sensor has a ground cause I hooked up straight for D3.
     
  4. pills_PMD

    pills_PMD Super Moderator

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    it should have a shielded wire that gets grounded
     
  5. asmallsol

    asmallsol Super Moderator

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    holy tripple post batman.
     
  6. lsvtec

    lsvtec GNU/Linux Evangelist

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    Not quite. It only needs one wire and the circuit grounds to the block.
     
  7. skylineboy

    skylineboy Junior Member

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    How come my check engine light comes on when the engine warms up? Can you tell if your knock sensor is bad or will it make a difference in power?
     
  8. tab

    tab Super Moderator

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    If you have everything working properly except for the knock sensor, you will "feel" the CEL come on. Your computer retards the timing on your engine to protect it from the knock it might be missing. Limp mode, safe mode, shitty, whatever you wanna call it. You can tell.
     
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