TH425 Shifting Issues When Cold

[gary carlton]

Hello
When my transmission is cold, it will not shift 1-2. As it warms up, it will begin to shift but it sounds/feels to me as if it cycles back and forth
1-2-1-2 etc very quickly. After about a mile of driving, everything becomes normal and it works as expected.
The question is what is causing this and can I fix it in place or do I have to pull the unit?
Thank you all very much for your time and any advice you can offer me.
gary
--
'78 Royale, "Road Grub"
Bellingham, WA

 

[johnny]

Call Manny. After you try the syggesstions on his web site. Manny's Trannys.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased