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  1. #1
    FEP Member jacquejp's Avatar
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    Jan 2012
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    Port Washington, WI
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    Default New ICM plug = No Spark

    I have a 1984 GT Turbo that started and ran fine before I started, but in order to fix some crumbing wiring I replaced the connectors and about 18 inches of wiring to the Ignition Control Module and Ignition Coil Connector. I fluxed, soldered and heat shrink all connections, but now I have a no spark condition. I tried to pull codes, but no codes are present. I have power to both sides of the ignition coil with key on. I pulled the ICM plug and have power to ICM and Coil wires with key on.

    When should the Red/Light Blue connected to the IDM plug with get power? The wiring diagram shows it connected to the starter and the clutch saftey switch. I was assuming it should put when I am cranking.

    Any other ideas to check? I found the How to solve an EFI no start post on http://sbftech.com, but the pictures are all missing so it was hard to follow. I am tempted to buy a new Motorcaft ICM Module and new coil, but I don't want to just throw parts at the problem especially since I was playing with the wiring.

  2. #2
    FEP Member jacquejp's Avatar
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    Jan 2012
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    Default

    Even though it started before I soldered in the new wiring, I replaced the TFI module yesterday; and she started. Now, I apparently need a new timing light to get it re-timed properly. My timing light was my dad’s and is probably 40 years old or older. The trigger isn’t working right.

  3. #3
    FEP Super Member mustangxtreme's Avatar
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    Feb 2009
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    Snohomish, Wa
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    Default

    Congrats on getting it started back up.
    Dave

    If common sense was common wouldn't it just be sense?

    1983 Capri L T top 5.0 efi aod
    1983 Capri RS Turbo
    1981 Black Magic 400 c6
    93 F-250 351 5sp 4x4

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