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Thread: Knock sensor

  1. #1
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    Default Knock sensor

    Hy, guys!

    Can anyone tell me, how can I check, if my knock sensor is broken?

    Because today I was in a fiat service, and their computer showed 2 errors:
    1 - Knock sensor bad
    2 - EEprom error

    My problem is, that on low revs, the car is very weak.
    On higher rews (from 3500-4000rpm) is the car stronger, but no stronger than a simple 2.0 twinspark engine.

    Any suggestions?
    Thanks!

  2. #2
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    Default

    Page 30 of this PDF may help but I do not know how much...
    http://berlinasportivo.com/Technical/q4manual/Q4ecu.pdf

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    Default

    Quote Originally Posted by AlfaJack View Post
    Page 30 of this PDF may help but I do not know how much...
    http://berlinasportivo.com/Technical/q4manual/Q4ecu.pdf

    Yes, I've already red that, but didn't help me much...

    Thanks anyway!

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    Default

    gerry ,
    if you want real check to knock sensor ,
    you need an oscilloscope .

    have you any friend ?
    working on electronic ?

    knock sensor work like microphone ,
    its listen the engine .

    if the connect the knock sensor to oscilloscope ,
    when hit the sensor with screw driver ,
    you must see the on screen changing frequence .(like microphone)

    if sensor defective ! or doesnt connect .
    ecu think engine has always knocking !
    after the 3000 rpm ..

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    Default

    Thank you!
    yes, I have a lot of friends!
    So I'll do that!
    Does anyone have a datasheet of this sensor?

    Thanks!

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