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Thread: What is this??? A20A

  1. #1
    SEi User Demon1024's Avatar
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    What is this??? A20A

    i was trying to find an oil leak on my car and noticed a plug i'd never seen before. it's on the back of the engine just right of the oil filter. it had a plug with two wires cut off it. my other engines have the hole but just a bolt filling it. anyone know? i thought knock sensor cause i can't think off anything else it could be....????



    "Weight is relative to power like time is relative to speed"



  2. #2
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    Re: What is this??? A20A

    never seen that before on any edm engines. can you get a picture of the thing that's bolted in the block?

    and try to set your camera in macro mode if it has that.


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  3. #3

    cygnus x-1's Avatar
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    Re: What is this??? A20A

    My Prelude engine has one of those. It's a temp sensor of some kind but I don't know what for. It's not for the fans or the temp gauge; probably one of the myriad of emissions controls.

    C|

  4. #4
    SEi User Demon1024's Avatar
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    Re: What is this??? A20A

    i took that pic with the head off. don't know if i can even get a pic now i look tonight

    "Weight is relative to power like time is relative to speed"

  5. #5
    LX User greentee76's Avatar
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    Re: What is this??? A20A

    Cygnus has got it. It's a temp sensor for the solenoid control unit. EFI engines come with just a plug in the block. Check the code on the block, it is probably a A20A1 as opposed to a A20A3.
    I just swapped in an A20A3 block in to my weber carbed LX.
    88 LX 5spd l 32/36 weber l KYB GR-2's l Refreshed A20A3 engine l

  6. #6
    SEi User Demon1024's Avatar
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    Re: What is this??? A20A

    its an a20a i wouldn't have guessed it was carbed being from japan. thank you, i would have never figured it out. maybe i can use this for an after market temp gauge?

    "Weight is relative to power like time is relative to speed"

  7. #7

    AccordB20A's Avatar
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    Re: What is this??? A20A

    as far as i am concerned all carb engines have them. I dont think you can hook a temp sensor up to it either as it probably puts out a weird ass signal

  8. #8

    cygnus x-1's Avatar
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    Re: What is this??? A20A

    Quote Originally Posted by Demon1024 View Post
    its an a20a i wouldn't have guessed it was carbed being from japan. thank you, i would have never figured it out. maybe i can use this for an after market temp gauge?
    Probably not, unless you can find a temp gauge designed for whatever the temp/resistance curve is for that sensor. And that's only if it's a thermistor type sensor. It could also be just a switch that switches at a particular temperature.

    C|

  9. #9
    SEi User Demon1024's Avatar
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    Re: What is this??? A20A

    use this hole i mean. not sure of the thread on it. probably not going to but would be fun to have 2 temp gauges

    "Weight is relative to power like time is relative to speed"

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    Re: What is this??? A20A

    sounds like the perfect location for a knock sensor to me! ;-) now to find something with the right thread pitch to screw in there!

  11. #11
    3Geez Veteran AccordEpicenter's Avatar
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    Re: What is this??? A20A

    haha chris you have the right idea!
    429whp 362wtq A20 TURBO. A20T>*

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