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Thread: RON coded plug

  1. #1
    gaz71's Avatar
    1.8T Quattro Sport AJL

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    RON coded plug

    I was looking at my engine earlier and I noticed something. At the back of the engine bay there is a brown plug which I assume to be the RON code plug. For my car, A4 1.8t Quattro Sport engine code AJL, I thought that it should have a plug marked 98. The one in my car is marked 87. Am I just being stupid or has my car got the wrong coded plug

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  3. #2
    "Stick a V8 in it!"

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    RON plugs havent been around for years, only the old Jetronic and very early motronic systems use them, later motronics had them but it didnt change the RON just acted a bit like a diag plug, and i've certainly never seen one on the A4

    Can you take a pic of this plug?

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
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  4. #3
    Broken Byzan's Avatar
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    Brown plug is normally the one that goes to the Oxy sensor IIRC

  5. #4
    griswold's Avatar
    2nd Gear

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    yes its from the cat mines got 87 too
    A4 1.8T Quattro sport
    A6 2.4 Avant SE



  6. #5
    gaz71's Avatar
    1.8T Quattro Sport AJL

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    OK, thanks.......Stupidity 1 Me 0

 

 

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