Burning coilpacks - 1g DSM

Posted by zakNH, Mar 10, 2017

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  1. zakNH

    zakNH Probationary Member

    3
    0
    Joined Feb 10, 2012
    atkinson, New Hampshire
    Hey guys, I already looked threw other forums for a few weeks now for my problem.

    No spark, I bought a new coilpack and burned up the second i cranked it over. I follwed the Engine elcetrical manual, tested my power transistor and coilpack with a meter, both confirmed to be no good.

    I bought a new PT and coilpack and tested to make sure they were good. I hooked them and and got the car to start. The next day, I tried to start again, no start. Tested the PT, it was good, but the coilpack was dead.

    I did check all the wires going to ECU, not sure what to do other then buy another coilpack.
     

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  2. jcastello214

    jcastello214 Proven Member

    65
    16
    Joined Jul 17, 2012
    Daly City, California
    Where did you get the PT and coil pack? If it's from the junkyard........
     
    My DSM:
    1994 Eagle Talon TSi AWD

    Street Build

    14b   automatic
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  3. C'LO

    C'LO Supporting Member

    67
    10
    Joined Sep 9, 2007
    Haverhill, Massachusetts
    I think you want to make sure all of your grounds are in good shape
     
  4. MooglyMoog

    MooglyMoog Probationary Member

    15
    1
    Joined Mar 7, 2017
    Madison Heights, Michigan
    There is probably a short in your electrical system causing a Higher amount of current to flow through your coil pack.

    You need to check your ground's as stated above but also check for shorts. This can be done with a short circuit test light. It's very easy to do.
     
  5. Brandon Gowey

    Brandon Gowey Probationary Member

    1
    0
    Joined Nov 14, 2017
    Knoxville, Tennessee
    How do you test the coil packs and power transistor because Im not getting any spark on 2or 3 but I’m getting spark on 1and 4 and I put new coil packs and power transistor and it still won’t start
     
  6. MooglyMoog

    MooglyMoog Probationary Member

    15
    1
    Joined Mar 7, 2017
    Madison Heights, Michigan
    you can arc the spark plugs to something in your engine bay to check for spark when you pull them with the coil pack.
     
  7. Bo0sTeD 4G63

    Bo0sTeD 4G63 Proven Member

    219
    15
    Joined Aug 31, 2008
    Miami, Florida
    Was the motor recently rebuilt? Did you swap out your cams?
     
    My DSM:
    1997 Mitsubishi Eclipse GSX

    Street Build

      automatic
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  8. motomattx

    motomattx Proven Member

    711
    112
    Joined Dec 9, 2010
    wampum, Pennsylvania
    You cant be burning out coil packs like that unless your applying more than 12v to them, you could connect them straight to the battery and not burn them out quickly unless for some reason they are staying alive all night after the key is off.
     
    My DSM:
    1995 Mitsubishi Eclipse GST

    Drag Race Build

    GT42   manual
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  9. luv2rallye

    luv2rallye DSM Wiseman

    7,312
    433
    Joined Jun 7, 2003
    Minneapolis, Minnesota
    If you're not getting spark on one pair, it's either the coil, PT, CAS , ECU, or wiring.
    How to test the ignition system components:
    http://www.dsmtuners.com/threads/st...ont-start-merged.437574/page-2#post-151265626
     
    Last edited: Nov 17, 2017
    My DSM:
    1999 Mitsubishi Eclipse GST

    14.200 @ 95.000 MPH
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  10. luv2rallye

    luv2rallye DSM Wiseman

    7,312
    433
    Joined Jun 7, 2003
    Minneapolis, Minnesota
    Agree. Especially if you don't have the PT (and coils to a lesser degree) in their stock mounting brackets which provide high current grounds and heat sinking for their operation. The ground braid between the firewall and intake manifold is also needed for proper ignition but it often gets forgotten, broken, or has poor connection (dirty/corroded/not tight). And if the small filter (aka radio noise) capacitor has an intermittent short or is missing, that will seriously affect ignition.
     
    My DSM:
    1999 Mitsubishi Eclipse GST

    14.200 @ 95.000 MPH
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  11. Ben-Stian

    Ben-Stian Probationary Member

    27
    0
    Joined Aug 23, 2006
    Nærbø, Europe
    If you are running a standalone ecu, it can be the trigger output are set on the opposite edge which will kill coils... If you are running on Stock ecu, ignore this answer.
     

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