HOW TO: Check, repair and tune your MK2/Corrado 1.8 16v

Discussion in '16-valve' started by rubjonny, Jul 16, 2009.

  1. rubjonny

    rubjonny Administrator Staff Member Admin

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    updated with fuel injector test info :)
     
  2. stereoflaver New Member

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  3. karmannski New Member

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    Hi I wonder if there is other link with the guide for the 2.0 9a engines for corrado of how to tune it
    this one is not worrking
     
  4. rubjonny

    rubjonny Administrator Staff Member Admin

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  5. pingman New Member

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    I have both these problems; odd occasional random miss/hold-back and my tacho drops straight past 2/3k down to ~1000 (occasionally dies) with a fast fall.

    No leaks on the the over-run valve piping that I can see.
    I've electrically charged it and it audibly clicks.
    I have good ign live on the yellow/black wire.
    As far as I can tell; no switched earth on the brown/black (BUT i'm not sure in what situation it should have a signal?? at idle from cold start?)

    Is it likely my ISV control unit is dead?
    Presumably that would be the likely culprit for the hunting and rich idle I have too?
     
  6. rubjonny

    rubjonny Administrator Staff Member Admin

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    the brown.black is triggered when you lift off from high rpm by the isv controller, have a look at the red/black wire from the controller to the spade connector near the coil and check the brown/white wires to the head as one of them is for the isv module
     
  7. pingman New Member

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    So If I rev it up to 5000 and let off the throttle I should see continuity with body earth on the black brown?
    could you advise what/how should I check the other two?
     
  8. rubjonny

    rubjonny Administrator Staff Member Admin

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    yep. easy to check the brown/white is good just check for ignition voltaghe between the black wire and the brown/white on the isv controller plug, for the red/black check for continuity between the isv pin and the coil negative :)
     

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