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

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

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  1. rubjonny

    rubjonny Administrator Staff Member Admin

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    updated with fuel injector test info :)
     
    rubjonny, Nov 29, 2013
    #41
  2. STEREOFLAVER

    stereoflaver New Member

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    stereoflaver, Jan 29, 2014
    #42
  3. KARMANNSKI

    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
     
    karmannski, Apr 7, 2015
    #43
  4. rubjonny

    rubjonny Administrator Staff Member Admin

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    rubjonny, Apr 7, 2015
    #44
  5. PINGMAN

    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?
     
    pingman, May 13, 2018
    #45
  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
     
    rubjonny, May 14, 2018
    #46
  7. PINGMAN

    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?
     
    pingman, May 14, 2018
    #47
  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 :)
     
    rubjonny, May 15, 2018
    #48
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