Keep blowing ignition module. Will MSD box make this stop??

Discussion in 'The BS Topic' started by QUAKE_WARS, Sep 26, 2016.

  1. QUAKE_WARS

    QUAKE_WARS Veteran Member

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    Im posting this here cause its not a camaro, But I need help bad and not getting help in the C10 forums.. I am so lost on this 1, i just dont know what to do next. Im sure someone here has experience with something like this!!
    HELP!!!!!

    1. new wires
    2. new spark plugs
    3. new cap and rotor
    4. New coil
    5. new ignition module
    6. replace dizzy with a good working GM 1

    Just about everything needed. Yes I used the paste so the module would not heat up, and yes I cleaned all the old paste off before I put the new paste.

    After all this new stuff, 2 min, later it blew the module again. GROUNDS ARE GOOD AND CLEAN ..

    Will a MSD box with a external coil make this NIGHTMARE go away???
    I am really lost what to do here.

    The only other thing I can think of is the ignition box on the steering column. Could those go bad or create a short to blow out the modules??


    [​IMG]
     
    Last edited: Sep 26, 2016
  2. night rider

    night rider Veteran Member

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    I ran into that problem twice. One it was a bad pickup in dizzy., and other time was bad ground, or odd grounding needed better fits I guess. It was a summit brand HEI and for some reason would not ground like normal. It kept blowing modules until I ran a ground wire from base of dizzy to firewall. Grounds was great on car. From battery to engine block, from battery to fender, from engine to frame, from engine to firewall, but still needed a wire from dizzy housing to firewall.
     
  3. brooksman9

    brooksman9 Veteran Member

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    Nice truck
     
  4. muscl car

    muscl car Veteran Member Lifetime Gold Member

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    Alternator spikes or power surges will kill a ignition module easily as will dirty grounds
     
    dale68z likes this.
  5. Gary S

    Gary S Administrator Lifetime Gold Member

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    When you replaced the cap, did you pull the ground strap out of the old one and install it in the new one? That little metal strap is necessary for the electronics parts to survive.
     
  6. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    I had a distributor which ate a module every couple of months. (Bad pick-up coil?)
    I replaced it with a Skip White unit and haven't lost a module since.

    I also had a new alternator which blew one in seconds. (It pegged the volt meter when I started the car.)

    A bad ground (high resistance) can do it too.
     
  7. QUAKE_WARS

    QUAKE_WARS Veteran Member

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    It would be a nice truck if i could drive it LOL. Been sitting a Year!
    Im going to try night riders idea! :)
     
  8. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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    Stuff like this is ALWAYS wiring/grounds. Get an Ohm meter, start testing.

    IF you throw An MSD box in there, it will likely get nuked too
     
  9. 81BirdMan

    81BirdMan Veteran Member

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    ^THIS
     
  10. QUAKE_WARS

    QUAKE_WARS Veteran Member

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    YES... Everything was done correctly. This is a factory stock truck minus wheels. Not modified or hacked in anyway. Thats why this has me so puzzled.
    Only thing I have left to do is put a new ignition switch on the column.
     

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