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Update:
I drove it outside of rush-hour traffic today to gather more info...
If the throttle condition was maintained during the oscillation, it wildly increased in amplitude until my concerns for the components forced backing-off.
It's not a "vibration" -- that's too fast. Picture a ceiling fan out of balance -- or a sine-wave oscillation.
I'm trying to learn to self-maintain vehicles as best as possible, and as safe as possible. Something is clearly amiss when the drivetrain accepts torque at the lowest RPM allowed by the ECU/TCU.
Thanks in advance for any clues!
-Rick / RH77
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“If we knew what we were doing, it wouldn't be called research” ― Albert Einstein
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