That's Torque Convertin' Business (TCB)
After realizing that the throttle/transmission cable wasn't tight enough to lock-up the TC, and spending 5 minutes to tighten it, I've already realized at least 2 MPG City mileage from a cold start on a short trip.
I'm excited to see what the highway brings today (about a 50-mile trip). With all of the diagnoses to try to fix this problem in the past year or more, the simplest was the correct one (OK Murphy, you can stop laughing now). It just burns me up that I've been missing out on 800 RPM avg, and closer to 1000 most times because of this simple thing.
But it needs tweaking. It shifts really hard and the TC acts odd, trying to engage early. I know, it would probably be a great way to grenade the tranny, but a new manual conversion isn't in the budget right now -- so it has to last.
Back to the garage, but progress has been made!
RH77