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    Transmission Modulator (Automatic)

    Transmission Modulator (Automatic) Operation:

    The transmission modulator determines when the transmission should shift. The modulator matches shift points to the engine load by the practical application of engine vacuum. It controls and regulates pressure for smooth operation in automatic transmission. In the absence of the modulator valve (such as a chrysler torque-flite), the transmission will shift from internal pressure.

    How To Instructions:

    Inspect - Check for obvious problems.
    Test - Give it an in-depth diagnosis.
    Service - Do the jobs that fix your car.
    Replace - Out with the old, in with the new.

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