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knock sensor

This is a discussion on knock sensor within the General Help forums, part of the LSx Technical Help Section category; So I got my car scanned today and it came up with a knock sensor code... I know this sounds ...

  1. #1
    Member AB'sLs1's Avatar
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    red
    1998 Z28

    knock sensor

    So I got my car scanned today and it came up with a knock sensor code... I know this sounds like a I big newbie question but what am I looking for in figuring out if its a knock or if the sensor is just bad? Also where r the knock sensors located on a 98 ls1?... I'm terrible with diagnostics so please go easy on me ha

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    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    the knock sensors are under the intake manifold and most likely its a bad sensor

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    Member DaddySS's Avatar
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    2000 Camaro SS Conv.

    Agreed. Water getting under the intake and deteriorating the sensors is common. You'll want to replace both.

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    Veteran 0rion's Avatar
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    06 duramax

    do you or have you washed the engine down with a garden hose?

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    Senior Member JayTA98's Avatar
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    Mean Black
    1998 Trans Am

    I do wash my engine bay about once a month but im very careful on how much water i use. I hopeI wont get issues from water. thats why i also didnt remove the foam strip when i swap my LS6 intake

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    Member AB'sLs1's Avatar
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    red
    1998 Z28

    Quote Originally Posted by 0rion View Post
    do you or have you washed the engine down with a garden hose?

    Haha no I'm scared to get all those electronics wet on top of the engine let alone the ones that are apparently hiding under the intake now that's not to say that the old owner didn't

    now should I be concerned about iy being an actual knock or is it most likely the sensor?... the motor is pretty much well untouched from factory and it has 170k on the clock

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    old timer blue02Z's Avatar
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    Navy Blue Metallic
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    There is a gm bulletin that says when you replace your sensors you should make a dam of rtv around the holes to keep water out. Your harness is probably all corroded too. You should replace both sensors, the harness, and make dams around them to keep water out

  8. #8
    Member AB'sLs1's Avatar
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    red
    1998 Z28

    Alright thanks everyone

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    Veteran 0rion's Avatar
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    what was the actual code? Most likely it's a bad sensor.

  10. #10
    Member AB'sLs1's Avatar
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    Quote Originally Posted by 0rion View Post
    what was the actual code? Most likely it's a bad sensor.
    I don't know what the actual code was when I got it taken in for inspection ur ran the code and told me that it was the knock sensor so I didn't get to see the code.... is it just one sensor or two cuz there's 2 in the picture but r they both knock sensors?


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