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Thread: Trouble Starting -- Fuel DELIVERY, distributor or coil only. NO FI questions.

  1. #51
    Join Date
    May 2000
    Location
    Raleigh, NC USA
    Posts
    3,806

    Default

    A coil could pass ohm test but not output if it breaks down under load. Test output; should be 9-13 kV. Do you have the correct rotor -- they are NOT interchangeable?

    Did you read the Cautions in Bentley 28.31? I interpret your 'spark test' as direct violation of those cautions which could, in turn, burn out the ECU &/or Hall sender.

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  3. #52
    Join Date
    Mar 2006
    Location
    ohio
    Posts
    6

    Default

    I checked for spark as per Haynes. Upon reading again I see that Haynes gives a precautions paragraph also (almost word for word as Bentley). Unfortunatly I went right to the troubleshooting section that states:

    "Fault diagnosis in the HT circuit of the electronic ignition is THE SAME as described
    in part A: Section 12 for conventional systems"

    Looks like Haynes has a contradiction in thier instructions. I hope I didn't blow any good components.

    Anyway, I guess I'm back to square one here. I'll troubleshoot with more caution and not assume my new parts are good either.

    Question: Seeing as the Ignition Control Unit is separate from the Main Control Unit (big box), can a faulty Main Control Unit cause a no spark condition? (looks to me like it gets it's signal FROM the coil? and cannot prohibit the coil function? )

    Thanks again

    P.S. I'm thowing Haynes in the trash and going with Bently
    "There and Back Again, a Hobbit's Holiday"

  4. #53
    Join Date
    Mar 2006
    Location
    ohio
    Posts
    6

    Default Problem solved

    My no spark condition was due to a bad pick-up coil.

    The NEW pick-up coil I got from Auto Zone was BAD also! This caused me to replace other parts needlessly.

    Lessons learned:

    1) Troubleshooting by the "substitution" method is not the best way to go.
    So even if it's only 17 degrees outside, taking time to follow the signal
    path can save you a lot of grief.

    2) Never assume a new part is good. Out-of-box failures do exist.

    Thanks for your help.
    "There and Back Again, a Hobbit's Holiday"

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