I'm back! With another issue, sadly...
I'm not sure if the car has always done this, but i don't think it has.
There's a few funny things: One, when the car goes from 3rd to 4th and 4th to 5th, it's almost like there are two shifts. The RPM will drop a bit, and then drop again. This happens after a bit of city driving, but not when the car is cold. When the car is cold, the shifts are all nice "snaps." It'll go from 1st to 2nd in about half a second or less, and then 2nd to 3rd in the same amount of time. When the car is warmed up, the shifts are smoother, but also longer. I feel like there's more slip in each shift, and i'm not sure if that's normal.
Another thing i've noticed. When the car is cold, it'll go into drive, and reverse perfectly fine. Sometimes if it's warm, then sits an hour or so, and is restarted, it might take a second to make the transition from reverse to drive. If i give it throttle during that time, the engine just freewheels. There's no "hard" engagement of drive when this happens.
When climbing hills in 5th gear around 40mph, i can here kinda a "whrrrmmrrrmmmrrmm" (Nice technical term there). It SOUNDS like the engine is revving up a bit, and then being bogged down, but the tach is dead steady, and my Ultraguage is showing the RPMs to be nearly completely constant. There might be a deviation of about 10rpm at 2K, and maybe 50RPM at 4.5K. I can't feel it in the car, and the speed is steady, but i do hear something strange in there.
If i floor it, the car will shift through all gears as expected, and there's nothing funny happening. (Except the car getting hard to keep in a straight line around 130)
I have no clue if the fluid has ever been changed, but judging by the oil, brake fluid, and power steering fluid, i'm somewhat certain that it hasn't been changed. I'm thinking maybe a fluid/filter change and a bottle of the magical Lucas Stop Slip stuff could fix things up for a bit if the TC is on its way out. I'm not really equipped to drop the transmission and replace the TC, but i would much rather do that than drop the transmission, haul it off, get it rebuilt, and put it back in. At that point, i may as well just get a used transmission.
I just dropped $500 on tires and an alignment, so i'm a bit short on money ATM... If someone has any ideas that might help my transmission, that'd be nice. Or if someone could say "Change the plugs" with confidence that could fix it, i'd really like to hear that