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Thread: Automatic Transmission Governor

  1. #21
    Senior Member
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    Ahh prolly a little outta my expertise..wouldnt know where to begin in making a logic box.
    Rob Depew
    Tacoma, Wa
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  2. #22
    Administrator Ron's Avatar
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    I thought I posted this updated version (I added main harness connections...no errors to previous reported).

    CompleteGovernorComputerUPGRADED062017.jpg

  3. #23
    Owner since 2007 Farrar's Avatar
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    Thanks for this, Ron! It is extremely helpful to have all of that info on a single page.
    3.0L, automatic, carbureted

  4. #24
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    Ron. Thanks for all the great information here.

    What is the process for using the test lamps?

    Does the car have to be in motion/driving to see the sequence of test lamps, per the logic described in the diagram on the first post?
    Currently resurrecting Vin # 11789 - One of the batch of 50 exported to the Middle East in 1982.

  5. #25
    Owner since 2007 Farrar's Avatar
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    Quote Originally Posted by SpudMurphy View Post
    Does the car have to be in motion/driving
    You can raise the rear of the car so that the drive wheels are in the air and block the front wheels so that the car can't move, then operate the throttle from within the engine compartment and watch the test lights. Be gentle.
    3.0L, automatic, carbureted

  6. #26
    Administrator Ron's Avatar
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    +1...on jackstands, or long wires if you want to watch them under load.

  7. #27
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    Great information. I have repaired dozens of these over the last 20 years- don't think I have seen all of the data collected in one place like this before. Nice job!
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  8. #28
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    The light indicators make sense for the gears, thanks for this inspiration! If I wanted to make an indicator for Park/Neutral, would I tap into the yellow/white wire?

    EDIT - I would probably feed signals into an Arduino (I think this is what is meant by logic box?) and then control the output indicators from there. So maybe it makes sense to connect Arduino pins as INPUT_PULLUP to the grounds (B, D, 6) and read the voltage value of them to determine what gear the car is in?
    Last edited by mike123; 11-09-2023 at 06:11 PM.

  9. #29
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    Yellow/White wire is grounded when the transmission is in neutral or park. It completes the circuit for the start inhibit relay.
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    Got any new Purflux oil filters? I may want to buy them.
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  10. #30
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    Thank you!

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