No Spark...

Discussion in 'Fox 5.0 Mustang Tech' started by ImportSlayer347, Sep 16, 2013.


  1. ImportSlayer347

    ImportSlayer347 Member

    Joined:
    Oct 13, 2008
    Messages:
    173
    Likes Received:
    1
    Trophy Points:
    19
    Location:
    Sarasota, FL
    I have no spark coming from the coil. I tested the MSD box and coil and they are both good. I tried a brand new distributor I have and that didn't help either. Only things I didn't try are the TFI module and the ECM. What are the chances that it is the engine computer?
  2. Casey2552

    Casey2552 Member

    Joined:
    Sep 16, 2013
    Messages:
    88
    Likes Received:
    2
    Trophy Points:
    9
    Location:
    Taylor,mi
    I would have to say it's your coil , or coil wire , or distributor cap .get old coil from jy or a buddy an swap same for wire and cap then look at msd computer also make sure all your grounds are good, maybe check codes and see if that says anything


    Sponsored Ad

  3. ImportSlayer347

    ImportSlayer347 Member

    Joined:
    Oct 13, 2008
    Messages:
    173
    Likes Received:
    1
    Trophy Points:
    19
    Location:
    Sarasota, FL
    As stated above the coil and msd box are good. I took my TFI module to Advance Auto Parts and tested it and it failed. We tested one off the shelf and it tested good just to make sure the test was done properly. So I guess I have my culprit.
  4. mikestang63

    mikestang63 Mustang Master

    Joined:
    Aug 28, 2012
    Messages:
    2,744
    Likes Received:
    649
    Trophy Points:
    134
    Ttust me. Get a FOMOCO or equivalent TFI from Rock Auto. The store bought ones are garbage. Make sure to remove the old grease and coat the backside of the new TFI with the proper dielectric grease- you can get it from Radio Shack. Do not use the stuff you use on spark plug wires.

    When I hit the JY, I try and pull all the old TFI's I can find as they are cheap insurance for $5 and normally are fine.
    jrichker likes this.
  5. ImportSlayer347

    ImportSlayer347 Member

    Joined:
    Oct 13, 2008
    Messages:
    173
    Likes Received:
    1
    Trophy Points:
    19
    Location:
    Sarasota, FL
    Yep it was the TFI. I got a new one and she started sparking right away. Car is up and running again.
  6. mikestang63

    mikestang63 Mustang Master

    Joined:
    Aug 28, 2012
    Messages:
    2,744
    Likes Received:
    649
    Trophy Points:
    134
    Glad you got it worked out. You might want to have a spare one hanging around as the auto parts store TFI's are prone to failure.
  7. ImportSlayer347

    ImportSlayer347 Member

    Joined:
    Oct 13, 2008
    Messages:
    173
    Likes Received:
    1
    Trophy Points:
    19
    Location:
    Sarasota, FL
    Oh I plan on it. Thanks.

Share This Page