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83 750 CDI box

Discussion in 'XJ Technical Chat' started by matthew.loftis, Oct 11, 2010.

  1. matthew.loftis

    matthew.loftis Member

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    Does anyone have one for sale or trade? Trying to get out as cheaply as possible. Boxes from 81-83 will work. Any model that has the red label.

    I have Seca 750 parts available for trade.

    thanks
     
    matthew.loftis, Oct 11, 2010
    #1
  2. Robert

    Robert Active Member

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    Are you having trouble with the existing box or is it missing entirely?
    I can troubleshoot and repair most issues with your box assuming you have one. Otherwise, start digging on flea-bay.
     
    Robert, Oct 11, 2010
    #2
  3. tcoop

    tcoop Active Member

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    PM sent
     
    tcoop, Oct 11, 2010
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  4. matthew.loftis

    matthew.loftis Member

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    I have one that was not functioning correctly. If you could help me figure it out, that'd be great. Always nice to have a backup. It was only sparking the inside two cylinders. Checked the coils and they were fine. Replaced the box and it ran fine. Has to be the box.

    Thanks guys, I found one for a good price on the Ebay. But i still have the broken one.
     
    matthew.loftis, Oct 12, 2010
    #4
  5. Robert

    Robert Active Member

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    If you are losing spark to one side, check the switching transistors on the output of the TCI. Using a multimeter in diode checking mode, check from the (here is the important part) ISOLATED center pin to the ISOLATED external pins. You should see continuity in one direction and discontinuity in the opposite comparing each outer lead with reference to the center lead. If you cannot get the TCI open (you will need some decent soldering skills to do this properly), I offer a TCI refresh service. PM for details.
     
    Robert, Oct 13, 2010
    #5

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