1995 854T, 218,000 miles
Ever have your 850 not shift beyond 2nd?
There has never been any indication of transmission issues with this car.
It had regular transmission fluid changes (at 80K & 160K) before I acquired the car at 198K. I do a drain and fill every 10K starting at 200,000 miles.

So here's what happened.
Daughter # 2 had the car last Wednesday night.
After about 15 minutes on the highway + 10 minutes in town, she stopped to gas up.
Left the gas station and continued in-town traffic (30 mph or so) but the car didn't want to shift out of 2nd.
Once, it shifted up to 3rd and then immediately back to 2nd.
Ambient temp. was around 95F, she was running with the A/C on so things under the hood were quite high.
She made it to her destination fine (though in 2nd gear).
About an hour and half later, she headed home. No problems at all - shifting through all the gears as normal.

It's been fine for the past 3 days.
I'm thinking the issue was heat related.
For some reason, I'm thinking there is some kind of default in the transmission programming that keeps it in a lower gear if the fluid reaches extreme temperatures.
What do you think?
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"Differences of opinions should be tolerated, but not if they're too different" - Sharon Craig