500 SEC Ignition Module / Amplifier

Discussion in 'Engine' started by Sonder13, Jul 1, 2011.

  1. Sonder13

    Sonder13 New Member

    Messages:
    7
    Joined:
    May 22, 2011
    Car:
    500 SEC
    Hi Everyone.

    Does anyone know whether an ignition module can be taken apart and checked for dry joints etc, rather than spending £250 on a secondhand one? Mine has just packed up and I want to minimise my expenditure if possible.

    Also does anyone know the best place to get an ignition module should a repair not be possible.

    Many thanks,
     
  2. neilrr

    neilrr MB Club Veteran

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    Don't know how successful repairs on EZLs are. Not very I suspect.

    I have these if you find you need a good used one.
     
  3. grober

    grober MB Club Veteran

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    Afaik they are pretty difficult to repair. Rumour has it that the output section can sometimes be repaired but if the ignition advance curve chip is fried the unit is finished.
     
  4. khimani_mohiki

    khimani_mohiki Hardcore MB Enthusiast

    Messages:
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    Location:
    Southam, Warwickshire
    Car:
    1992 190E, 1989 500SEC, 1968 220/8
    is it the type with 1x4 pin socket, 2x4 pin sockets or 2x8 pin sockets?
     
  5. OP
    OP
    Sonder13

    Sonder13 New Member

    Messages:
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    Joined:
    May 22, 2011
    Car:
    500 SEC
    It has the 2x4 pin sockets.

    I read on another forum that some of these units are interchangeable between models. Is this true as I know of a 420 SE being broken broken near me?

    Thanks,
     
  6. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    The 420 ezl unit is not suitable for a 500, you need to swap these like for like.
     
  7. neilrr

    neilrr MB Club Veteran

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    The four pin units are cheap & readily available on ebay, it's the 8 pin versions that are expensive.

    Search ebay using the MB part # on your own EZL & you'll find several for sale.
     
  8. OP
    OP
    Sonder13

    Sonder13 New Member

    Messages:
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    May 22, 2011
    Car:
    500 SEC
    Thanks guys. I'll try e-bay.
     
  9. khimani_mohiki

    khimani_mohiki Hardcore MB Enthusiast

    Messages:
    476
    Joined:
    Jul 22, 2009
    Location:
    Southam, Warwickshire
    Car:
    1992 190E, 1989 500SEC, 1968 220/8
    You can use an EZL from a 420, 500 or 560 without any difficulties. Infact you could probably use a more readily available EZL from a 6 or 4 cylinder engine, they all do the same thing.
     
  10. OP
    OP
    Sonder13

    Sonder13 New Member

    Messages:
    7
    Joined:
    May 22, 2011
    Car:
    500 SEC
    Problem Solved

    I managed to get a second hand ignition module for £145 andeverything is working perfectly now.

    Thanks for everyones help.
     

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