Thread: Knock sensor?

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  1. #21 Re: Knock sensor? 
    GTP Level Member tomtom123's Avatar
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    A little was showing. And it was green, so I assume it is corroded pretty far up the wire. I suppose I should replace it before the starter?
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  2. #22 Re: Knock sensor? 
    GTP Level Member tomtom123's Avatar
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    So problem, if I'm not mistaken, the engine isn't grounding properly.

    So I ran my jumper cable from the body of the starter up to the negative on the battery. Started the car right up.

    Ran the jumper cable from the transmission negative mounts to the battery, just clicks.

    So for a temporary fix I ran a cable from the negative battery terminal to the top alternator bolt. Car starts fine now.

    So I need to replace my negative wires? However, I believe the transmission is grounding which I assume is why everything else works electrically. The engine just isn't grounding, which the starter grounds to the engine through the bolts that mount it to the motor. So am I on the right track so far?
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  3. #23 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    Your engine and trans are bolted together. The negative cable goes on a stud that holds the engine and trans together, so it's directly connected to the engine.

    Your cable is bad, please replace it.

    BTW.. when you figure that out.. let's talk about that rotating knock sensor ... cause no part of it should be loose and rotating.
    I drink..so consider that when reading my posts.

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  4. #24 Re: Knock sensor? 
    GTP Level Member tomtom123's Avatar
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    Alright Bill. Now that it is running, I am going to go to Autozone since I have class here shortly. I will replace it, this was just a very short temporary fix until I can run into town as this is the only vehicle at the house right now =/

    The rotating knock sensor... this is an old pic, but the plastic part that the electrical plugs into rotates. Turns all around. It shouldn't?
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  5. #25 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    Nope..you found your knock issue
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  6. #26 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    Ps.. enjoy the coolant bath
    I drink..so consider that when reading my posts.

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  7. #27 Re: Knock sensor? 
    GTP Level Member tomtom123's Avatar
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    Lol thanks Bill. Both my sensors turn like that =/
    As a matter of fact... All 3 do lol
    (Been here before, no I do not have 3 on my engine, I have 2 L67's and between the 2 I had 3 knock sensors that were not broke off at the base) =P
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  8. #28 Re: Knock sensor? 
    GTP Level Member tomtom123's Avatar
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    And is this the proper ground stud? I was told it was, however, that bolt just mounts the transmission case to the transmission body, doesn't it?
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  9. #29 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    Correct location
    I drink..so consider that when reading my posts.

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  10. #30 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    Real life pic
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  11. #31 Re: Knock sensor? 
    GTP Level Member tomtom123's Avatar
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    That looks really close to the starter. Hmmm
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  12. #32 Re: Knock sensor? 
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    Mine currently.


    Down there underneath my headers is where your pic shows =/
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  13. #33 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    What's your question? The diagram is direct from GM, the pic is the way they are in color.

    Currently yours is on the wrong side of a gasket.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  14. #34 Re: Knock sensor? 
    GTP Level Member tomtom123's Avatar
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    Quote Originally Posted by BillBoost37 View Post
    Real life pic
    The spot GM has it is directly underneath the header, but my transmission looks differently?
    The spot in this picture is just a big teansmission bolt on my car.

    I assume I have the wrong bolt there
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  15. #35 Re: Knock sensor? 
    GT Level Member m17davis's Avatar
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    Yes. Switch those 2 bolts. You have it grounded one bolt too high on the trans.
    Ported Gen III ~ 3.4 ~ HAI ~ 180stat ~ 605's ~ Speed Daddy's ~ SLP Catback ~ A/C delete ~ Aluminum Sub-frame ~ AGX Coilovers ~ Vinnie Spacers ~ Fusebox & PCM Relocation ~ Wire Tuck
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  16. #36 Re: Knock sensor? 
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    Alright. Shouldn't be too hard to do that. I'll do the switching when I get the new battery cable. Is there a write up on how to replace the negative cable?
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  17. #37 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    Write up for Tom

    1. Remove old cable
    2. Put new cable in
    3. Put tools away.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  18. #38 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    do you have any bolts where the trans and engine meet that have a stud on them ?
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  19. #39 Re: Knock sensor? 
    GTX Level Member SnowTh1ef's Avatar
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    Quote Originally Posted by BillBoost37 View Post
    Write up for Tom

    1. Remove old cable
    2. Put new cable in
    3. Put tools away.

    Lol what I was thinking..
    04 GTP -HAI, 1.9 rockers.
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  20. #40 Re: Knock sensor? 
    Turbo is the way to go. BillBoost37's Avatar
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    Quote Originally Posted by m17davis View Post
    Yes. Switch those 2 bolts. You have it grounded one bolt too high on the trans.
    he can't switch those two bolts. They are totally different bolts.
    I drink..so consider that when reading my posts.

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