TLDR: The transmission doesn’t want to shift when cold. It won’t shift to second until it gets warm. And it seems to be engine warm, not tranny warm. I know both the fluid and filter are clean.
1963 Falcon Futura sedan
170 cu. in. six cylinder eng.
2-speed automatic transmission
This has been going-on for a while, so last week I removed the pan to change the trans filter in my Falcon. The filter was clean. I re-installed it because a) the auto parts place gave me the wrong replacement filter, and b) it was clean. Anyway, I finished the job pouring-in 5 quarts of TypeF, and the transmission performed flawlessly (on ~500ml too little fluid) until last Saturday when it began to act-up again. I also added that missing ~1/2 quart of fluid.
Up until that Saturday, we’d had temps between 50+F at night and 70+F in the day. That Friday night it dropped near freezing with Saturday’s high of about 55F. It’s been that cold or colder since, and my tranny’s misbehavin’ again.
The other night’s temp dropped to about 28F, so I let the Ford heat for ~10 mins in the driveway before I left that morning. She shifted like a new car; like nothing’s wrong.
But going out for lunch that day, I did not let it warm and ended-up driving around in 1st gear for 5 minutes or so -until the water temp was over the “C” mark.
Any thoughts or ideas?